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Diffstat (limited to 'gcc-4.8.1/gcc/gcc.c')
| -rw-r--r-- | gcc-4.8.1/gcc/gcc.c | 8592 |
1 files changed, 0 insertions, 8592 deletions
diff --git a/gcc-4.8.1/gcc/gcc.c b/gcc-4.8.1/gcc/gcc.c deleted file mode 100644 index fea73945a..000000000 --- a/gcc-4.8.1/gcc/gcc.c +++ /dev/null @@ -1,8592 +0,0 @@ -/* Compiler driver program that can handle many languages. - Copyright (C) 1987-2013 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 3, or (at your option) any later -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING3. If not see -<http://www.gnu.org/licenses/>. */ - -/* This program is the user interface to the C compiler and possibly to -other compilers. It is used because compilation is a complicated procedure -which involves running several programs and passing temporary files between -them, forwarding the users switches to those programs selectively, -and deleting the temporary files at the end. - -CC recognizes how to compile each input file by suffixes in the file names. -Once it knows which kind of compilation to perform, the procedure for -compilation is specified by a string called a "spec". */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "multilib.h" /* before tm.h */ -#include "tm.h" -#include "xregex.h" -#include "obstack.h" -#include "intl.h" -#include "prefix.h" -#include "gcc.h" -#include "diagnostic.h" -#include "flags.h" -#include "opts.h" -#include "params.h" -#include "vec.h" -#include "filenames.h" - -/* By default there is no special suffix for target executables. */ -/* FIXME: when autoconf is fixed, remove the host check - dj */ -#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) -#define HAVE_TARGET_EXECUTABLE_SUFFIX -#endif - -/* By default there is no special suffix for host executables. */ -#ifdef HOST_EXECUTABLE_SUFFIX -#define HAVE_HOST_EXECUTABLE_SUFFIX -#else -#define HOST_EXECUTABLE_SUFFIX "" -#endif - -/* By default, the suffix for target object files is ".o". */ -#ifdef TARGET_OBJECT_SUFFIX -#define HAVE_TARGET_OBJECT_SUFFIX -#else -#define TARGET_OBJECT_SUFFIX ".o" -#endif - -static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; - -/* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ -#ifndef LIBRARY_PATH_ENV -#define LIBRARY_PATH_ENV "LIBRARY_PATH" -#endif - -/* If a stage of compilation returns an exit status >= 1, - compilation of that file ceases. */ - -#define MIN_FATAL_STATUS 1 - -/* Flag set by cppspec.c to 1. */ -int is_cpp_driver; - -/* Flag set to nonzero if an @file argument has been supplied to gcc. */ -static bool at_file_supplied; - -/* Definition of string containing the arguments given to configure. */ -#include "configargs.h" - -/* Flag saying to print the command line options understood by gcc and its - sub-processes. */ - -static int print_help_list; - -/* Flag saying to print the version of gcc and its sub-processes. */ - -static int print_version; - -/* Flag indicating whether we should ONLY print the command and - arguments (like verbose_flag) without executing the command. - Displayed arguments are quoted so that the generated command - line is suitable for execution. This is intended for use in - shell scripts to capture the driver-generated command line. */ -static int verbose_only_flag; - -/* Flag indicating how to print command line options of sub-processes. */ - -static int print_subprocess_help; - -/* Whether we should report subprocess execution times to a file. */ - -FILE *report_times_to_file = NULL; - -/* Nonzero means place this string before uses of /, so that include - and library files can be found in an alternate location. */ - -#ifdef TARGET_SYSTEM_ROOT -static const char *target_system_root = TARGET_SYSTEM_ROOT; -#else -static const char *target_system_root = 0; -#endif - -/* Nonzero means pass the updated target_system_root to the compiler. */ - -static int target_system_root_changed; - -/* Nonzero means append this string to target_system_root. */ - -static const char *target_sysroot_suffix = 0; - -/* Nonzero means append this string to target_system_root for headers. */ - -static const char *target_sysroot_hdrs_suffix = 0; - -/* Nonzero means write "temp" files in source directory - and use the source file's name in them, and don't delete them. */ - -static enum save_temps { - SAVE_TEMPS_NONE, /* no -save-temps */ - SAVE_TEMPS_CWD, /* -save-temps in current directory */ - SAVE_TEMPS_OBJ /* -save-temps in object directory */ -} save_temps_flag; - -/* Output file to use to get the object directory for -save-temps=obj */ -static char *save_temps_prefix = 0; -static size_t save_temps_length = 0; - -/* The compiler version. */ - -static const char *compiler_version; - -/* The target version. */ - -static const char *const spec_version = DEFAULT_TARGET_VERSION; - -/* The target machine. */ - -static const char *spec_machine = DEFAULT_TARGET_MACHINE; - -/* Nonzero if cross-compiling. - When -b is used, the value comes from the `specs' file. */ - -#ifdef CROSS_DIRECTORY_STRUCTURE -static const char *cross_compile = "1"; -#else -static const char *cross_compile = "0"; -#endif - -/* Greatest exit code of sub-processes that has been encountered up to - now. */ -static int greatest_status = 1; - -/* This is the obstack which we use to allocate many strings. */ - -static struct obstack obstack; - -/* This is the obstack to build an environment variable to pass to - collect2 that describes all of the relevant switches of what to - pass the compiler in building the list of pointers to constructors - and destructors. */ - -static struct obstack collect_obstack; - -/* Forward declaration for prototypes. */ -struct path_prefix; -struct prefix_list; - -static void init_spec (void); -static void store_arg (const char *, int, int); -static void insert_wrapper (const char *); -static char *load_specs (const char *); -static void read_specs (const char *, bool, bool); -static void set_spec (const char *, const char *, bool); -static struct compiler *lookup_compiler (const char *, size_t, const char *); -static char *build_search_list (const struct path_prefix *, const char *, - bool, bool); -static void xputenv (const char *); -static void putenv_from_prefixes (const struct path_prefix *, const char *, - bool); -static int access_check (const char *, int); -static char *find_a_file (const struct path_prefix *, const char *, int, bool); -static void add_prefix (struct path_prefix *, const char *, const char *, - int, int, int); -static void add_sysrooted_prefix (struct path_prefix *, const char *, - const char *, int, int, int); -static char *skip_whitespace (char *); -static void delete_if_ordinary (const char *); -static void delete_temp_files (void); -static void delete_failure_queue (void); -static void clear_failure_queue (void); -static int check_live_switch (int, int); -static const char *handle_braces (const char *); -static inline bool input_suffix_matches (const char *, const char *); -static inline bool switch_matches (const char *, const char *, int); -static inline void mark_matching_switches (const char *, const char *, int); -static inline void process_marked_switches (void); -static const char *process_brace_body (const char *, const char *, const char *, int, int); -static const struct spec_function *lookup_spec_function (const char *); -static const char *eval_spec_function (const char *, const char *); -static const char *handle_spec_function (const char *); -static char *save_string (const char *, int); -static void set_collect_gcc_options (void); -static int do_spec_1 (const char *, int, const char *); -static int do_spec_2 (const char *); -static void do_option_spec (const char *, const char *); -static void do_self_spec (const char *); -static const char *find_file (const char *); -static int is_directory (const char *, bool); -static const char *validate_switches (const char *, bool); -static void validate_all_switches (void); -static inline void validate_switches_from_spec (const char *, bool); -static void give_switch (int, int); -static int used_arg (const char *, int); -static int default_arg (const char *, int); -static void set_multilib_dir (void); -static void print_multilib_info (void); -static void perror_with_name (const char *); -static void display_help (void); -static void add_preprocessor_option (const char *, int); -static void add_assembler_option (const char *, int); -static void add_linker_option (const char *, int); -static void process_command (unsigned int, struct cl_decoded_option *); -static int execute (void); -static void alloc_args (void); -static void clear_args (void); -static void fatal_signal (int); -#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) -static void init_gcc_specs (struct obstack *, const char *, const char *, - const char *); -#endif -#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) -static const char *convert_filename (const char *, int, int); -#endif - -static const char *getenv_spec_function (int, const char **); -static const char *if_exists_spec_function (int, const char **); -static const char *if_exists_else_spec_function (int, const char **); -static const char *replace_outfile_spec_function (int, const char **); -static const char *remove_outfile_spec_function (int, const char **); -static const char *version_compare_spec_function (int, const char **); -static const char *include_spec_function (int, const char **); -static const char *find_file_spec_function (int, const char **); -static const char *find_plugindir_spec_function (int, const char **); -static const char *print_asm_header_spec_function (int, const char **); -static const char *compare_debug_dump_opt_spec_function (int, const char **); -static const char *compare_debug_self_opt_spec_function (int, const char **); -static const char *compare_debug_auxbase_opt_spec_function (int, const char **); -static const char *pass_through_libs_spec_func (int, const char **); -static const char *replace_extension_spec_func (int, const char **); -static char *convert_white_space (char *); - -/* The Specs Language - -Specs are strings containing lines, each of which (if not blank) -is made up of a program name, and arguments separated by spaces. -The program name must be exact and start from root, since no path -is searched and it is unreliable to depend on the current working directory. -Redirection of input or output is not supported; the subprograms must -accept filenames saying what files to read and write. - -In addition, the specs can contain %-sequences to substitute variable text -or for conditional text. Here is a table of all defined %-sequences. -Note that spaces are not generated automatically around the results of -expanding these sequences; therefore, you can concatenate them together -or with constant text in a single argument. - - %% substitute one % into the program name or argument. - %i substitute the name of the input file being processed. - %b substitute the basename of the input file being processed. - This is the substring up to (and not including) the last period - and not including the directory unless -save-temps was specified - to put temporaries in a different location. - %B same as %b, but include the file suffix (text after the last period). - %gSUFFIX - substitute a file name that has suffix SUFFIX and is chosen - once per compilation, and mark the argument a la %d. To reduce - exposure to denial-of-service attacks, the file name is now - chosen in a way that is hard to predict even when previously - chosen file names are known. For example, `%g.s ... %g.o ... %g.s' - might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches - the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it - had been pre-processed. Previously, %g was simply substituted - with a file name chosen once per compilation, without regard - to any appended suffix (which was therefore treated just like - ordinary text), making such attacks more likely to succeed. - %|SUFFIX - like %g, but if -pipe is in effect, expands simply to "-". - %mSUFFIX - like %g, but if -pipe is in effect, expands to nothing. (We have both - %| and %m to accommodate differences between system assemblers; see - the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) - %uSUFFIX - like %g, but generates a new temporary file name even if %uSUFFIX - was already seen. - %USUFFIX - substitutes the last file name generated with %uSUFFIX, generating a - new one if there is no such last file name. In the absence of any - %uSUFFIX, this is just like %gSUFFIX, except they don't share - the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' - would involve the generation of two distinct file names, one - for each `%g.s' and another for each `%U.s'. Previously, %U was - simply substituted with a file name chosen for the previous %u, - without regard to any appended suffix. - %jSUFFIX - substitutes the name of the HOST_BIT_BUCKET, if any, and if it is - writable, and if save-temps is off; otherwise, substitute the name - of a temporary file, just like %u. This temporary file is not - meant for communication between processes, but rather as a junk - disposal mechanism. - %.SUFFIX - substitutes .SUFFIX for the suffixes of a matched switch's args when - it is subsequently output with %*. SUFFIX is terminated by the next - space or %. - %d marks the argument containing or following the %d as a - temporary file name, so that that file will be deleted if GCC exits - successfully. Unlike %g, this contributes no text to the argument. - %w marks the argument containing or following the %w as the - "output file" of this compilation. This puts the argument - into the sequence of arguments that %o will substitute later. - %V indicates that this compilation produces no "output file". - %W{...} - like %{...} but mark last argument supplied within - as a file to be deleted on failure. - %o substitutes the names of all the output files, with spaces - automatically placed around them. You should write spaces - around the %o as well or the results are undefined. - %o is for use in the specs for running the linker. - Input files whose names have no recognized suffix are not compiled - at all, but they are included among the output files, so they will - be linked. - %O substitutes the suffix for object files. Note that this is - handled specially when it immediately follows %g, %u, or %U - (with or without a suffix argument) because of the need for - those to form complete file names. The handling is such that - %O is treated exactly as if it had already been substituted, - except that %g, %u, and %U do not currently support additional - SUFFIX characters following %O as they would following, for - example, `.o'. - %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot - (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH - and -B options) and -imultilib as necessary. - %s current argument is the name of a library or startup file of some sort. - Search for that file in a standard list of directories - and substitute the full name found. - %eSTR Print STR as an error message. STR is terminated by a newline. - Use this when inconsistent options are detected. - %nSTR Print STR as a notice. STR is terminated by a newline. - %x{OPTION} Accumulate an option for %X. - %X Output the accumulated linker options specified by compilations. - %Y Output the accumulated assembler options specified by compilations. - %Z Output the accumulated preprocessor options specified by compilations. - %a process ASM_SPEC as a spec. - This allows config.h to specify part of the spec for running as. - %A process ASM_FINAL_SPEC as a spec. A capital A is actually - used here. This can be used to run a post-processor after the - assembler has done its job. - %D Dump out a -L option for each directory in startfile_prefixes. - If multilib_dir is set, extra entries are generated with it affixed. - %l process LINK_SPEC as a spec. - %L process LIB_SPEC as a spec. - %M Output multilib_os_dir. - %G process LIBGCC_SPEC as a spec. - %R Output the concatenation of target_system_root and - target_sysroot_suffix. - %S process STARTFILE_SPEC as a spec. A capital S is actually used here. - %E process ENDFILE_SPEC as a spec. A capital E is actually used here. - %C process CPP_SPEC as a spec. - %1 process CC1_SPEC as a spec. - %2 process CC1PLUS_SPEC as a spec. - %* substitute the variable part of a matched option. (See below.) - Note that each comma in the substituted string is replaced by - a single space. - %<S remove all occurrences of -S from the command line. - Note - this command is position dependent. % commands in the - spec string before this one will see -S, % commands in the - spec string after this one will not. - %>S Similar to "%<S", but keep it in the GCC command line. - %<S* remove all occurrences of all switches beginning with -S from the - command line. - %:function(args) - Call the named function FUNCTION, passing it ARGS. ARGS is - first processed as a nested spec string, then split into an - argument vector in the usual fashion. The function returns - a string which is processed as if it had appeared literally - as part of the current spec. - %{S} substitutes the -S switch, if that switch was given to GCC. - If that switch was not specified, this substitutes nothing. - Here S is a metasyntactic variable. - %{S*} substitutes all the switches specified to GCC whose names start - with -S. This is used for -o, -I, etc; switches that take - arguments. GCC considers `-o foo' as being one switch whose - name starts with `o'. %{o*} would substitute this text, - including the space; thus, two arguments would be generated. - %{S*&T*} likewise, but preserve order of S and T options (the order - of S and T in the spec is not significant). Can be any number - of ampersand-separated variables; for each the wild card is - optional. Useful for CPP as %{D*&U*&A*}. - - %{S:X} substitutes X, if the -S switch was given to GCC. - %{!S:X} substitutes X, if the -S switch was NOT given to GCC. - %{S*:X} substitutes X if one or more switches whose names start - with -S was given to GCC. Normally X is substituted only - once, no matter how many such switches appeared. However, - if %* appears somewhere in X, then X will be substituted - once for each matching switch, with the %* replaced by the - part of that switch that matched the '*'. - %{.S:X} substitutes X, if processing a file with suffix S. - %{!.S:X} substitutes X, if NOT processing a file with suffix S. - %{,S:X} substitutes X, if processing a file which will use spec S. - %{!,S:X} substitutes X, if NOT processing a file which will use spec S. - - %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be - combined with '!', '.', ',', and '*' as above binding stronger - than the OR. - If %* appears in X, all of the alternatives must be starred, and - only the first matching alternative is substituted. - %{S:X; if S was given to GCC, substitutes X; - T:Y; else if T was given to GCC, substitutes Y; - :D} else substitutes D. There can be as many clauses as you need. - This may be combined with '.', '!', ',', '|', and '*' as above. - - %(Spec) processes a specification defined in a specs file as *Spec: - -The conditional text X in a %{S:X} or similar construct may contain -other nested % constructs or spaces, or even newlines. They are -processed as usual, as described above. Trailing white space in X is -ignored. White space may also appear anywhere on the left side of the -colon in these constructs, except between . or * and the corresponding -word. - -The -O, -f, -g, -m, and -W switches are handled specifically in these -constructs. If another value of -O or the negated form of a -f, -m, or --W switch is found later in the command line, the earlier switch -value is ignored, except with {S*} where S is just one letter; this -passes all matching options. - -The character | at the beginning of the predicate text is used to indicate -that a command should be piped to the following command, but only if -pipe -is specified. - -Note that it is built into GCC which switches take arguments and which -do not. You might think it would be useful to generalize this to -allow each compiler's spec to say which switches take arguments. But -this cannot be done in a consistent fashion. GCC cannot even decide -which input files have been specified without knowing which switches -take arguments, and it must know which input files to compile in order -to tell which compilers to run. - -GCC also knows implicitly that arguments starting in `-l' are to be -treated as compiler output files, and passed to the linker in their -proper position among the other output files. */ - -/* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ - -/* config.h can define ASM_SPEC to provide extra args to the assembler - or extra switch-translations. */ -#ifndef ASM_SPEC -#define ASM_SPEC "" -#endif - -/* config.h can define ASM_FINAL_SPEC to run a post processor after - the assembler has run. */ -#ifndef ASM_FINAL_SPEC -#define ASM_FINAL_SPEC \ - "%{gsplit-dwarf: \n\ - objcopy --extract-dwo \ - %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ - %{c:%{o*:%:replace-extension(%{o*:%*} .dwo)}%{!o*:%b.dwo}}%{!c:%b.dwo} \n\ - objcopy --strip-dwo \ - %{c:%{o*:%*}%{!o*:%b%O}}%{!c:%U%O} \ - }" -#endif - -/* config.h can define CPP_SPEC to provide extra args to the C preprocessor - or extra switch-translations. */ -#ifndef CPP_SPEC -#define CPP_SPEC "" -#endif - -/* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus - or extra switch-translations. */ -#ifndef CC1_SPEC -#define CC1_SPEC "" -#endif - -/* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus - or extra switch-translations. */ -#ifndef CC1PLUS_SPEC -#define CC1PLUS_SPEC "" -#endif - -/* config.h can define LINK_SPEC to provide extra args to the linker - or extra switch-translations. */ -#ifndef LINK_SPEC -#define LINK_SPEC "" -#endif - -/* config.h can define LIB_SPEC to override the default libraries. */ -#ifndef LIB_SPEC -#define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" -#endif - -/* mudflap specs */ -#ifndef MFWRAP_SPEC -/* XXX: valid only for GNU ld */ -/* XXX: should exactly match hooks provided by libmudflap.a */ -#define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \ - --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\ - --wrap=mmap --wrap=mmap64 --wrap=munmap --wrap=alloca\ -} %{fmudflapth: --wrap=pthread_create\ -}} %{fmudflap|fmudflapth: --wrap=main}" -#endif -#ifndef MFLIB_SPEC -#define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}" -#endif - -/* When using -fsplit-stack we need to wrap pthread_create, in order - to initialize the stack guard. We always use wrapping, rather than - shared library ordering, and we keep the wrapper function in - libgcc. This is not yet a real spec, though it could become one; - it is currently just stuffed into LINK_SPEC. FIXME: This wrapping - only works with GNU ld and gold. FIXME: This is incompatible with - -fmudflap when linking statically, which wants to do its own - wrapping. */ -#define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}" - -#ifndef LIBASAN_SPEC -#ifdef STATIC_LIBASAN_LIBS -#define ADD_STATIC_LIBASAN_LIBS \ - " %{static-libasan:" STATIC_LIBASAN_LIBS "}" -#else -#define ADD_STATIC_LIBASAN_LIBS -#endif -#ifdef LIBASAN_EARLY_SPEC -#define LIBASAN_SPEC ADD_STATIC_LIBASAN_LIBS -#elif defined(HAVE_LD_STATIC_DYNAMIC) -#define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \ - "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}" \ - ADD_STATIC_LIBASAN_LIBS -#else -#define LIBASAN_SPEC "-lasan" ADD_STATIC_LIBASAN_LIBS -#endif -#endif - -#ifndef LIBASAN_EARLY_SPEC -#define LIBASAN_EARLY_SPEC "" -#endif - -#ifndef LIBTSAN_SPEC -#ifdef STATIC_LIBTSAN_LIBS -#define ADD_STATIC_LIBTSAN_LIBS \ - " %{static-libtsan:" STATIC_LIBTSAN_LIBS "}" -#else -#define ADD_STATIC_LIBTSAN_LIBS -#endif -#ifdef LIBTSAN_EARLY_SPEC -#define LIBTSAN_SPEC ADD_STATIC_LIBTSAN_LIBS -#elif defined(HAVE_LD_STATIC_DYNAMIC) -#define LIBTSAN_SPEC "%{static-libtsan:" LD_STATIC_OPTION \ - "} -ltsan %{static-libtsan:" LD_DYNAMIC_OPTION "}" \ - ADD_STATIC_LIBTSAN_LIBS -#else -#define LIBTSAN_SPEC "-ltsan" ADD_STATIC_LIBTSAN_LIBS -#endif -#endif - -#ifndef LIBTSAN_EARLY_SPEC -#define LIBTSAN_EARLY_SPEC "" -#endif - -/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is - included. */ -#ifndef LIBGCC_SPEC -#if defined(REAL_LIBGCC_SPEC) -#define LIBGCC_SPEC REAL_LIBGCC_SPEC -#elif defined(LINK_LIBGCC_SPECIAL_1) -/* Have gcc do the search for libgcc.a. */ -#define LIBGCC_SPEC "libgcc.a%s" -#else -#define LIBGCC_SPEC "-lgcc" -#endif -#endif - -/* config.h can define STARTFILE_SPEC to override the default crt0 files. */ -#ifndef STARTFILE_SPEC -#define STARTFILE_SPEC \ - "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" -#endif - -/* config.h can define ENDFILE_SPEC to override the default crtn files. */ -#ifndef ENDFILE_SPEC -#define ENDFILE_SPEC "" -#endif - -#ifndef LINKER_NAME -#define LINKER_NAME "collect2" -#endif - -#ifdef HAVE_AS_DEBUG_PREFIX_MAP -#define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}" -#else -#define ASM_MAP "" -#endif - -/* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' - to the assembler. */ -#ifndef ASM_DEBUG_SPEC -# if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ - && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) -# define ASM_DEBUG_SPEC \ - (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ - ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \ - : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP) -# else -# if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) -# define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP -# endif -# if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) -# define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP -# endif -# endif -#endif -#ifndef ASM_DEBUG_SPEC -# define ASM_DEBUG_SPEC "" -#endif - -/* Here is the spec for running the linker, after compiling all files. */ - -/* This is overridable by the target in case they need to specify the - -lgcc and -lc order specially, yet not require them to override all - of LINK_COMMAND_SPEC. */ -#ifndef LINK_GCC_C_SEQUENCE_SPEC -#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" -#endif - -#ifndef LINK_SSP_SPEC -#ifdef TARGET_LIBC_PROVIDES_SSP -#define LINK_SSP_SPEC "%{fstack-protector:}" -#else -#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}" -#endif -#endif - -#ifndef LINK_PIE_SPEC -#ifdef HAVE_LD_PIE -#define LINK_PIE_SPEC "%{pie:-pie} " -#else -#define LINK_PIE_SPEC "%{pie:} " -#endif -#endif - -#ifndef LINK_BUILDID_SPEC -# if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID) -# define LINK_BUILDID_SPEC "%{!r:--build-id} " -# endif -#endif - -/* Conditional to test whether the LTO plugin is used or not. - FIXME: For slim LTO we will need to enable plugin unconditionally. This - still cause problems with PLUGIN_LD != LD and when plugin is built but - not useable. For GCC 4.6 we don't support slim LTO and thus we can enable - plugin only when LTO is enabled. We still honor explicit - -fuse-linker-plugin if the linker used understands -plugin. */ - -/* The linker has some plugin support. */ -#if HAVE_LTO_PLUGIN > 0 -/* The linker used has full plugin support, use LTO plugin by default. */ -#if HAVE_LTO_PLUGIN == 2 -#define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin" -#define PLUGIN_COND_CLOSE "}" -#else -/* The linker used has limited plugin support, use LTO plugin with explicit - -fuse-linker-plugin. */ -#define PLUGIN_COND "fuse-linker-plugin" -#define PLUGIN_COND_CLOSE "" -#endif -#define LINK_PLUGIN_SPEC \ - "%{"PLUGIN_COND": \ - -plugin %(linker_plugin_file) \ - -plugin-opt=%(lto_wrapper) \ - -plugin-opt=-fresolution=%u.res \ - %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \ - }"PLUGIN_COND_CLOSE -#else -/* The linker used doesn't support -plugin, reject -fuse-linker-plugin. */ -#define LINK_PLUGIN_SPEC "%{fuse-linker-plugin:\ - %e-fuse-linker-plugin is not supported in this configuration}" -#endif - -/* Linker command line options for -fsanitize= early on the command line. */ -#ifndef SANITIZER_EARLY_SPEC -#define SANITIZER_EARLY_SPEC "\ -%{!nostdlib:%{!nodefaultlibs:%{fsanitize=address:" LIBASAN_EARLY_SPEC "} \ - %{fsanitize=thread:" LIBTSAN_EARLY_SPEC "}}}" -#endif - -/* Linker command line options for -fsanitize= late on the command line. */ -#ifndef SANITIZER_SPEC -#define SANITIZER_SPEC "\ -%{!nostdlib:%{!nodefaultlibs:%{fsanitize=address:" LIBASAN_SPEC "\ - %{static:%ecannot specify -static with -fsanitize=address}\ - %{fsanitize=thread:%e-fsanitize=address is incompatible with -fsanitize=thread}}\ - %{fsanitize=thread:" LIBTSAN_SPEC "\ - %{!pie:%{!shared:%e-fsanitize=thread linking must be done with -pie or -shared}}}}}" -#endif - -/* -u* was put back because both BSD and SysV seem to support it. */ -/* %{static:} simply prevents an error message if the target machine - doesn't handle -static. */ -/* We want %{T*} after %{L*} and %D so that it can be used to specify linker - scripts which exist in user specified directories, or in standard - directories. */ -/* We pass any -flto flags on to the linker, which is expected - to understand them. In practice, this means it had better be collect2. */ -/* %{e*} includes -export-dynamic; see comment in common.opt. */ -#ifndef LINK_COMMAND_SPEC -#define LINK_COMMAND_SPEC "\ -%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ - %(linker) " \ - LINK_PLUGIN_SPEC \ - "%{flto|flto=*:%<fcompare-debug*} \ - %{flto} %{flto=*} %l " LINK_PIE_SPEC \ - "%{fuse-ld=*:-fuse-ld=%*}\ - %X %{o*} %{e*} %{N} %{n} %{r}\ - %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\ - %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\ - %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\ - %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\ - %(mflib) " STACK_SPLIT_SPEC "\ - %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} " SANITIZER_SPEC " \ - %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ - %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}" -#endif - -#ifndef LINK_LIBGCC_SPEC -/* Generate -L options for startfile prefix list. */ -# define LINK_LIBGCC_SPEC "%D" -#endif - -#ifndef STARTFILE_PREFIX_SPEC -# define STARTFILE_PREFIX_SPEC "" -#endif - -#ifndef SYSROOT_SPEC -# define SYSROOT_SPEC "--sysroot=%R" -#endif - -#ifndef SYSROOT_SUFFIX_SPEC -# define SYSROOT_SUFFIX_SPEC "" -#endif - -#ifndef SYSROOT_HEADERS_SUFFIX_SPEC -# define SYSROOT_HEADERS_SUFFIX_SPEC "" -#endif - -static const char *asm_debug = ASM_DEBUG_SPEC; -static const char *cpp_spec = CPP_SPEC; -static const char *cc1_spec = CC1_SPEC; -static const char *cc1plus_spec = CC1PLUS_SPEC; -static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; -static const char *link_ssp_spec = LINK_SSP_SPEC; -static const char *asm_spec = ASM_SPEC; -static const char *asm_final_spec = ASM_FINAL_SPEC; -static const char *link_spec = LINK_SPEC; -static const char *lib_spec = LIB_SPEC; -static const char *mfwrap_spec = MFWRAP_SPEC; -static const char *mflib_spec = MFLIB_SPEC; -static const char *link_gomp_spec = ""; -static const char *libgcc_spec = LIBGCC_SPEC; -static const char *endfile_spec = ENDFILE_SPEC; -static const char *startfile_spec = STARTFILE_SPEC; -static const char *linker_name_spec = LINKER_NAME; -static const char *linker_plugin_file_spec = ""; -static const char *lto_wrapper_spec = ""; -static const char *lto_gcc_spec = ""; -static const char *link_command_spec = LINK_COMMAND_SPEC; -static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; -static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; -static const char *sysroot_spec = SYSROOT_SPEC; -static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; -static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; -static const char *self_spec = ""; - -/* Standard options to cpp, cc1, and as, to reduce duplication in specs. - There should be no need to override these in target dependent files, - but we need to copy them to the specs file so that newer versions - of the GCC driver can correctly drive older tool chains with the - appropriate -B options. */ - -/* When cpplib handles traditional preprocessing, get rid of this, and - call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so - that we default the front end language better. */ -static const char *trad_capable_cpp = -"cc1 -E %{traditional|traditional-cpp:-traditional-cpp}"; - -/* We don't wrap .d files in %W{} since a missing .d file, and - therefore no dependency entry, confuses make into thinking a .o - file that happens to exist is up-to-date. */ -static const char *cpp_unique_options = -"%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\ - %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ - %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ - %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ - %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\ - %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\ - %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ - %{H} %C %{D*&U*&A*} %{i*} %Z %i\ - %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\ - %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\ - %{E|M|MM:%W{o*}}"; - -/* This contains cpp options which are common with cc1_options and are passed - only when preprocessing only to avoid duplication. We pass the cc1 spec - options to the preprocessor so that it the cc1 spec may manipulate - options used to set target flags. Those special target flags settings may - in turn cause preprocessor symbols to be defined specially. */ -static const char *cpp_options = -"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ - %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\ - %{undef} %{save-temps*:-fpch-preprocess}"; - -/* This contains cpp options which are not passed when the preprocessor - output will be used by another program. */ -static const char *cpp_debug_options = "%{d*}"; - -/* NB: This is shared amongst all front-ends, except for Ada. */ -static const char *cc1_options = -"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ - %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\ - %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\ - %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \ - %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \ - %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ - %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ - %{Qn:-fno-ident} %{Qy:} %{-help:--help}\ - %{-target-help:--target-help}\ - %{-version:--version}\ - %{-help=*:--help=%*}\ - %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ - %{fsyntax-only:-o %j} %{-param*}\ - %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\ - %{coverage:-fprofile-arcs -ftest-coverage}"; - -static const char *asm_options = -"%{-target-help:%:print-asm-header()} " -#if HAVE_GNU_AS -/* If GNU AS is used, then convert -w (no warnings), -I, and -v - to the assembler equivalents. */ -"%{v} %{w:-W} %{I*} " -#endif -"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; - -static const char *invoke_as = -#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT -"%{!fwpa:\ - %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ - %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\ - }"; -#else -"%{!fwpa:\ - %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\ - %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\ - }"; -#endif - -/* Some compilers have limits on line lengths, and the multilib_select - and/or multilib_matches strings can be very long, so we build them at - run time. */ -static struct obstack multilib_obstack; -static const char *multilib_select; -static const char *multilib_matches; -static const char *multilib_defaults; -static const char *multilib_exclusions; -static const char *multilib_reuse; - -/* Check whether a particular argument is a default argument. */ - -#ifndef MULTILIB_DEFAULTS -#define MULTILIB_DEFAULTS { "" } -#endif - -static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; - -#ifndef DRIVER_SELF_SPECS -#define DRIVER_SELF_SPECS "" -#endif - -/* Adding -fopenmp should imply pthreads. This is particularly important - for targets that use different start files and suchlike. */ -#ifndef GOMP_SELF_SPECS -#define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}" -#endif - -/* Likewise for -fgnu-tm. */ -#ifndef GTM_SELF_SPECS -#define GTM_SELF_SPECS "%{fgnu-tm: -pthread}" -#endif - -static const char *const driver_self_specs[] = { - "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns", - DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS, GTM_SELF_SPECS -}; - -#ifndef OPTION_DEFAULT_SPECS -#define OPTION_DEFAULT_SPECS { "", "" } -#endif - -struct default_spec -{ - const char *name; - const char *spec; -}; - -static const struct default_spec - option_default_specs[] = { OPTION_DEFAULT_SPECS }; - -struct user_specs -{ - struct user_specs *next; - const char *filename; -}; - -static struct user_specs *user_specs_head, *user_specs_tail; - - -/* Record the mapping from file suffixes for compilation specs. */ - -struct compiler -{ - const char *suffix; /* Use this compiler for input files - whose names end in this suffix. */ - - const char *spec; /* To use this compiler, run this spec. */ - - const char *cpp_spec; /* If non-NULL, substitute this spec - for `%C', rather than the usual - cpp_spec. */ - const int combinable; /* If nonzero, compiler can deal with - multiple source files at once (IMA). */ - const int needs_preprocessing; /* If nonzero, source files need to - be run through a preprocessor. */ -}; - -/* Pointer to a vector of `struct compiler' that gives the spec for - compiling a file, based on its suffix. - A file that does not end in any of these suffixes will be passed - unchanged to the loader and nothing else will be done to it. - - An entry containing two 0s is used to terminate the vector. - - If multiple entries match a file, the last matching one is used. */ - -static struct compiler *compilers; - -/* Number of entries in `compilers', not counting the null terminator. */ - -static int n_compilers; - -/* The default list of file name suffixes and their compilation specs. */ - -static const struct compiler default_compilers[] = -{ - /* Add lists of suffixes of known languages here. If those languages - were not present when we built the driver, we will hit these copies - and be given a more meaningful error than "file not used since - linking is not done". */ - {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0}, - {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0}, - {".mii", "#Objective-C++", 0, 0, 0}, - {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0}, - {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0}, - {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0}, - {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0}, - {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0}, - {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0}, - {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0}, - {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0}, - {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0}, - {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0}, - {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0}, - {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0}, - {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0}, - {".r", "#Ratfor", 0, 0, 0}, - {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0}, - {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0}, - {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0}, - {".go", "#Go", 0, 1, 0}, - /* Next come the entries for C. */ - {".c", "@c", 0, 0, 1}, - {"@c", - /* cc1 has an integrated ISO C preprocessor. We should invoke the - external preprocessor if -save-temps is given. */ - "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ - %{!E:%{!M:%{!MM:\ - %{traditional:\ -%eGNU C no longer supports -traditional without -E}\ - %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ - %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ - cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ - %(cc1_options)}\ - %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ - cc1 %(cpp_unique_options) %(cc1_options)}}}\ - %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1}, - {"-", - "%{!E:%e-E or -x required when input is from standard input}\ - %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0}, - {".h", "@c-header", 0, 0, 0}, - {"@c-header", - /* cc1 has an integrated ISO C preprocessor. We should invoke the - external preprocessor if -save-temps is given. */ - "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ - %{!E:%{!M:%{!MM:\ - %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ - %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\ - cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \ - %(cc1_options)\ - %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ - %W{o*:--output-pch=%*}}%V}\ - %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\ - cc1 %(cpp_unique_options) %(cc1_options)\ - %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\ - %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0}, - {".i", "@cpp-output", 0, 0, 0}, - {"@cpp-output", - "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0}, - {".s", "@assembler", 0, 0, 0}, - {"@assembler", - "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0}, - {".sx", "@assembler-with-cpp", 0, 0, 0}, - {".S", "@assembler-with-cpp", 0, 0, 0}, - {"@assembler-with-cpp", -#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT - "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ - %{E|M|MM:%(cpp_debug_options)}\ - %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ - as %(asm_debug) %(asm_options) %|.s %A }}}}" -#else - "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\ - %{E|M|MM:%(cpp_debug_options)}\ - %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ - as %(asm_debug) %(asm_options) %m.s %A }}}}" -#endif - , 0, 0, 0}, - -#include "specs.h" - /* Mark end of table. */ - {0, 0, 0, 0, 0} -}; - -/* Number of elements in default_compilers, not counting the terminator. */ - -static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; - -typedef char *char_p; /* For DEF_VEC_P. */ - -/* A vector of options to give to the linker. - These options are accumulated by %x, - and substituted into the linker command with %X. */ -static vec<char_p> linker_options; - -/* A vector of options to give to the assembler. - These options are accumulated by -Wa, - and substituted into the assembler command with %Y. */ -static vec<char_p> assembler_options; - -/* A vector of options to give to the preprocessor. - These options are accumulated by -Wp, - and substituted into the preprocessor command with %Z. */ -static vec<char_p> preprocessor_options; - -static char * -skip_whitespace (char *p) -{ - while (1) - { - /* A fully-blank line is a delimiter in the SPEC file and shouldn't - be considered whitespace. */ - if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') - return p + 1; - else if (*p == '\n' || *p == ' ' || *p == '\t') - p++; - else if (*p == '#') - { - while (*p != '\n') - p++; - p++; - } - else - break; - } - - return p; -} -/* Structures to keep track of prefixes to try when looking for files. */ - -struct prefix_list -{ - const char *prefix; /* String to prepend to the path. */ - struct prefix_list *next; /* Next in linked list. */ - int require_machine_suffix; /* Don't use without machine_suffix. */ - /* 2 means try both machine_suffix and just_machine_suffix. */ - int priority; /* Sort key - priority within list. */ - int os_multilib; /* 1 if OS multilib scheme should be used, - 0 for GCC multilib scheme. */ -}; - -struct path_prefix -{ - struct prefix_list *plist; /* List of prefixes to try */ - int max_len; /* Max length of a prefix in PLIST */ - const char *name; /* Name of this list (used in config stuff) */ -}; - -/* List of prefixes to try when looking for executables. */ - -static struct path_prefix exec_prefixes = { 0, 0, "exec" }; - -/* List of prefixes to try when looking for startup (crt0) files. */ - -static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; - -/* List of prefixes to try when looking for include files. */ - -static struct path_prefix include_prefixes = { 0, 0, "include" }; - -/* Suffix to attach to directories searched for commands. - This looks like `MACHINE/VERSION/'. */ - -static const char *machine_suffix = 0; - -/* Suffix to attach to directories searched for commands. - This is just `MACHINE/'. */ - -static const char *just_machine_suffix = 0; - -/* Adjusted value of GCC_EXEC_PREFIX envvar. */ - -static const char *gcc_exec_prefix; - -/* Adjusted value of standard_libexec_prefix. */ - -static const char *gcc_libexec_prefix; - -/* Default prefixes to attach to command names. */ - -#ifndef STANDARD_STARTFILE_PREFIX_1 -#define STANDARD_STARTFILE_PREFIX_1 "/lib/" -#endif -#ifndef STANDARD_STARTFILE_PREFIX_2 -#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" -#endif - -#ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */ -#undef MD_EXEC_PREFIX -#undef MD_STARTFILE_PREFIX -#undef MD_STARTFILE_PREFIX_1 -#endif - -/* If no prefixes defined, use the null string, which will disable them. */ -#ifndef MD_EXEC_PREFIX -#define MD_EXEC_PREFIX "" -#endif -#ifndef MD_STARTFILE_PREFIX -#define MD_STARTFILE_PREFIX "" -#endif -#ifndef MD_STARTFILE_PREFIX_1 -#define MD_STARTFILE_PREFIX_1 "" -#endif - -/* These directories are locations set at configure-time based on the - --prefix option provided to configure. Their initializers are - defined in Makefile.in. These paths are not *directly* used when - gcc_exec_prefix is set because, in that case, we know where the - compiler has been installed, and use paths relative to that - location instead. */ -static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; -static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; -static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; -static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; - -/* For native compilers, these are well-known paths containing - components that may be provided by the system. For cross - compilers, these paths are not used. */ -static const char *md_exec_prefix = MD_EXEC_PREFIX; -static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; -static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; -static const char *const standard_startfile_prefix_1 - = STANDARD_STARTFILE_PREFIX_1; -static const char *const standard_startfile_prefix_2 - = STANDARD_STARTFILE_PREFIX_2; - -/* A relative path to be used in finding the location of tools - relative to the driver. */ -static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; - -/* Subdirectory to use for locating libraries. Set by - set_multilib_dir based on the compilation options. */ - -static const char *multilib_dir; - -/* Subdirectory to use for locating libraries in OS conventions. Set by - set_multilib_dir based on the compilation options. */ - -static const char *multilib_os_dir; - -/* Subdirectory to use for locating libraries in multiarch conventions. Set by - set_multilib_dir based on the compilation options. */ - -static const char *multiarch_dir; - -/* Structure to keep track of the specs that have been defined so far. - These are accessed using %(specname) in a compiler or link - spec. */ - -struct spec_list -{ - /* The following 2 fields must be first */ - /* to allow EXTRA_SPECS to be initialized */ - const char *name; /* name of the spec. */ - const char *ptr; /* available ptr if no static pointer */ - - /* The following fields are not initialized */ - /* by EXTRA_SPECS */ - const char **ptr_spec; /* pointer to the spec itself. */ - struct spec_list *next; /* Next spec in linked list. */ - int name_len; /* length of the name */ - bool user_p; /* whether string come from file spec. */ - bool alloc_p; /* whether string was allocated */ -}; - -#define INIT_STATIC_SPEC(NAME,PTR) \ - { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, false, false } - -/* List of statically defined specs. */ -static struct spec_list static_specs[] = -{ - INIT_STATIC_SPEC ("asm", &asm_spec), - INIT_STATIC_SPEC ("asm_debug", &asm_debug), - INIT_STATIC_SPEC ("asm_final", &asm_final_spec), - INIT_STATIC_SPEC ("asm_options", &asm_options), - INIT_STATIC_SPEC ("invoke_as", &invoke_as), - INIT_STATIC_SPEC ("cpp", &cpp_spec), - INIT_STATIC_SPEC ("cpp_options", &cpp_options), - INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), - INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), - INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), - INIT_STATIC_SPEC ("cc1", &cc1_spec), - INIT_STATIC_SPEC ("cc1_options", &cc1_options), - INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), - INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), - INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), - INIT_STATIC_SPEC ("endfile", &endfile_spec), - INIT_STATIC_SPEC ("link", &link_spec), - INIT_STATIC_SPEC ("lib", &lib_spec), - INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec), - INIT_STATIC_SPEC ("mflib", &mflib_spec), - INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), - INIT_STATIC_SPEC ("libgcc", &libgcc_spec), - INIT_STATIC_SPEC ("startfile", &startfile_spec), - INIT_STATIC_SPEC ("cross_compile", &cross_compile), - INIT_STATIC_SPEC ("version", &compiler_version), - INIT_STATIC_SPEC ("multilib", &multilib_select), - INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), - INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), - INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), - INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), - INIT_STATIC_SPEC ("multilib_options", &multilib_options), - INIT_STATIC_SPEC ("multilib_reuse", &multilib_reuse), - INIT_STATIC_SPEC ("linker", &linker_name_spec), - INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec), - INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec), - INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec), - INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), - INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), - INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), - INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), - INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), - INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), - INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), - INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), - INIT_STATIC_SPEC ("self_spec", &self_spec), -}; - -#ifdef EXTRA_SPECS /* additional specs needed */ -/* Structure to keep track of just the first two args of a spec_list. - That is all that the EXTRA_SPECS macro gives us. */ -struct spec_list_1 -{ - const char *const name; - const char *const ptr; -}; - -static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; -static struct spec_list *extra_specs = (struct spec_list *) 0; -#endif - -/* List of dynamically allocates specs that have been defined so far. */ - -static struct spec_list *specs = (struct spec_list *) 0; - -/* List of static spec functions. */ - -static const struct spec_function static_spec_functions[] = -{ - { "getenv", getenv_spec_function }, - { "if-exists", if_exists_spec_function }, - { "if-exists-else", if_exists_else_spec_function }, - { "replace-outfile", replace_outfile_spec_function }, - { "remove-outfile", remove_outfile_spec_function }, - { "version-compare", version_compare_spec_function }, - { "include", include_spec_function }, - { "find-file", find_file_spec_function }, - { "find-plugindir", find_plugindir_spec_function }, - { "print-asm-header", print_asm_header_spec_function }, - { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function }, - { "compare-debug-self-opt", compare_debug_self_opt_spec_function }, - { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function }, - { "pass-through-libs", pass_through_libs_spec_func }, - { "replace-extension", replace_extension_spec_func }, -#ifdef EXTRA_SPEC_FUNCTIONS - EXTRA_SPEC_FUNCTIONS -#endif - { 0, 0 } -}; - -static int processing_spec_function; - -/* Add appropriate libgcc specs to OBSTACK, taking into account - various permutations of -shared-libgcc, -shared, and such. */ - -#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) - -#ifndef USE_LD_AS_NEEDED -#define USE_LD_AS_NEEDED 0 -#endif - -static void -init_gcc_specs (struct obstack *obstack, const char *shared_name, - const char *static_name, const char *eh_name) -{ - char *buf; - - buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}" - "%{!static:%{!static-libgcc:" -#if USE_LD_AS_NEEDED - "%{!shared-libgcc:", - static_name, " --as-needed ", shared_name, " --no-as-needed" - "}" - "%{shared-libgcc:", - shared_name, "%{!shared: ", static_name, "}" - "}" -#else - "%{!shared:" - "%{!shared-libgcc:", static_name, " ", eh_name, "}" - "%{shared-libgcc:", shared_name, " ", static_name, "}" - "}" -#ifdef LINK_EH_SPEC - "%{shared:" - "%{shared-libgcc:", shared_name, "}" - "%{!shared-libgcc:", static_name, "}" - "}" -#else - "%{shared:", shared_name, "}" -#endif -#endif - "}}", NULL); - - obstack_grow (obstack, buf, strlen (buf)); - free (buf); -} -#endif /* ENABLE_SHARED_LIBGCC */ - -/* Initialize the specs lookup routines. */ - -static void -init_spec (void) -{ - struct spec_list *next = (struct spec_list *) 0; - struct spec_list *sl = (struct spec_list *) 0; - int i; - - if (specs) - return; /* Already initialized. */ - - if (verbose_flag) - fnotice (stderr, "Using built-in specs.\n"); - -#ifdef EXTRA_SPECS - extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1)); - - for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) - { - sl = &extra_specs[i]; - sl->name = extra_specs_1[i].name; - sl->ptr = extra_specs_1[i].ptr; - sl->next = next; - sl->name_len = strlen (sl->name); - sl->ptr_spec = &sl->ptr; - next = sl; - } -#endif - - for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) - { - sl = &static_specs[i]; - sl->next = next; - next = sl; - } - -#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) - /* ??? If neither -shared-libgcc nor --static-libgcc was - seen, then we should be making an educated guess. Some proposed - heuristics for ELF include: - - (1) If "-Wl,--export-dynamic", then it's a fair bet that the - program will be doing dynamic loading, which will likely - need the shared libgcc. - - (2) If "-ldl", then it's also a fair bet that we're doing - dynamic loading. - - (3) For each ET_DYN we're linking against (either through -lfoo - or /some/path/foo.so), check to see whether it or one of - its dependencies depends on a shared libgcc. - - (4) If "-shared" - - If the runtime is fixed to look for program headers instead - of calling __register_frame_info at all, for each object, - use the shared libgcc if any EH symbol referenced. - - If crtstuff is fixed to not invoke __register_frame_info - automatically, for each object, use the shared libgcc if - any non-empty unwind section found. - - Doing any of this probably requires invoking an external program to - do the actual object file scanning. */ - { - const char *p = libgcc_spec; - int in_sep = 1; - - /* Transform the extant libgcc_spec into one that uses the shared libgcc - when given the proper command line arguments. */ - while (*p) - { - if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) - { - init_gcc_specs (&obstack, - "-lgcc_s" -#ifdef USE_LIBUNWIND_EXCEPTIONS - " -lunwind" -#endif - , - "-lgcc", - "-lgcc_eh" -#ifdef USE_LIBUNWIND_EXCEPTIONS -# ifdef HAVE_LD_STATIC_DYNAMIC - " %{!static:" LD_STATIC_OPTION "} -lunwind" - " %{!static:" LD_DYNAMIC_OPTION "}" -# else - " -lunwind" -# endif -#endif - ); - - p += 5; - in_sep = 0; - } - else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) - { - /* Ug. We don't know shared library extensions. Hope that - systems that use this form don't do shared libraries. */ - init_gcc_specs (&obstack, - "-lgcc_s", - "libgcc.a%s", - "libgcc_eh.a%s" -#ifdef USE_LIBUNWIND_EXCEPTIONS - " -lunwind" -#endif - ); - p += 10; - in_sep = 0; - } - else - { - obstack_1grow (&obstack, *p); - in_sep = (*p == ' '); - p += 1; - } - } - - obstack_1grow (&obstack, '\0'); - libgcc_spec = XOBFINISH (&obstack, const char *); - } -#endif -#ifdef USE_AS_TRADITIONAL_FORMAT - /* Prepend "--traditional-format" to whatever asm_spec we had before. */ - { - static const char tf[] = "--traditional-format "; - obstack_grow (&obstack, tf, sizeof(tf) - 1); - obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); - asm_spec = XOBFINISH (&obstack, const char *); - } -#endif - -#if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC || \ - defined LINKER_HASH_STYLE -# ifdef LINK_BUILDID_SPEC - /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */ - obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1); -# endif -# ifdef LINK_EH_SPEC - /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ - obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1); -# endif -# ifdef LINKER_HASH_STYLE - /* Prepend --hash-style=LINKER_HASH_STYLE to whatever link_spec we had - before. */ - { - static const char hash_style[] = "--hash-style="; - obstack_grow (&obstack, hash_style, sizeof(hash_style) - 1); - obstack_grow (&obstack, LINKER_HASH_STYLE, sizeof(LINKER_HASH_STYLE) - 1); - obstack_1grow (&obstack, ' '); - } -# endif - obstack_grow0 (&obstack, link_spec, strlen (link_spec)); - link_spec = XOBFINISH (&obstack, const char *); -#endif - - specs = sl; -} - -/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is - removed; If the spec starts with a + then SPEC is added to the end of the - current spec. */ - -static void -set_spec (const char *name, const char *spec, bool user_p) -{ - struct spec_list *sl; - const char *old_spec; - int name_len = strlen (name); - int i; - - /* If this is the first call, initialize the statically allocated specs. */ - if (!specs) - { - struct spec_list *next = (struct spec_list *) 0; - for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) - { - sl = &static_specs[i]; - sl->next = next; - next = sl; - } - specs = sl; - } - - /* See if the spec already exists. */ - for (sl = specs; sl; sl = sl->next) - if (name_len == sl->name_len && !strcmp (sl->name, name)) - break; - - if (!sl) - { - /* Not found - make it. */ - sl = XNEW (struct spec_list); - sl->name = xstrdup (name); - sl->name_len = name_len; - sl->ptr_spec = &sl->ptr; - sl->alloc_p = 0; - *(sl->ptr_spec) = ""; - sl->next = specs; - specs = sl; - } - - old_spec = *(sl->ptr_spec); - *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) - ? concat (old_spec, spec + 1, NULL) - : xstrdup (spec)); - -#ifdef DEBUG_SPECS - if (verbose_flag) - fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); -#endif - - /* Free the old spec. */ - if (old_spec && sl->alloc_p) - free (CONST_CAST(char *, old_spec)); - - sl->user_p = user_p; - sl->alloc_p = true; -} - -/* Accumulate a command (program name and args), and run it. */ - -typedef const char *const_char_p; /* For DEF_VEC_P. */ - -/* Vector of pointers to arguments in the current line of specifications. */ - -static vec<const_char_p> argbuf; - -/* Position in the argbuf vector containing the name of the output file - (the value associated with the "-o" flag). */ - -static int have_o_argbuf_index = 0; - -/* Were the options -c, -S or -E passed. */ -static int have_c = 0; - -/* Was the option -o passed. */ -static int have_o = 0; - -/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated - temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for - it here. */ - -static struct temp_name { - const char *suffix; /* suffix associated with the code. */ - int length; /* strlen (suffix). */ - int unique; /* Indicates whether %g or %u/%U was used. */ - const char *filename; /* associated filename. */ - int filename_length; /* strlen (filename). */ - struct temp_name *next; -} *temp_names; - -/* Number of commands executed so far. */ - -static int execution_count; - -/* Number of commands that exited with a signal. */ - -static int signal_count; - -/* Allocate the argument vector. */ - -static void -alloc_args (void) -{ - argbuf.create (10); -} - -/* Clear out the vector of arguments (after a command is executed). */ - -static void -clear_args (void) -{ - argbuf.truncate (0); -} - -/* Add one argument to the vector at the end. - This is done when a space is seen or at the end of the line. - If DELETE_ALWAYS is nonzero, the arg is a filename - and the file should be deleted eventually. - If DELETE_FAILURE is nonzero, the arg is a filename - and the file should be deleted if this compilation fails. */ - -static void -store_arg (const char *arg, int delete_always, int delete_failure) -{ - argbuf.safe_push (arg); - - if (strcmp (arg, "-o") == 0) - have_o_argbuf_index = argbuf.length (); - if (delete_always || delete_failure) - { - const char *p; - /* If the temporary file we should delete is specified as - part of a joined argument extract the filename. */ - if (arg[0] == '-' - && (p = strrchr (arg, '='))) - arg = p + 1; - record_temp_file (arg, delete_always, delete_failure); - } -} - -/* Load specs from a file name named FILENAME, replacing occurrences of - various different types of line-endings, \r\n, \n\r and just \r, with - a single \n. */ - -static char * -load_specs (const char *filename) -{ - int desc; - int readlen; - struct stat statbuf; - char *buffer; - char *buffer_p; - char *specs; - char *specs_p; - - if (verbose_flag) - fnotice (stderr, "Reading specs from %s\n", filename); - - /* Open and stat the file. */ - desc = open (filename, O_RDONLY, 0); - if (desc < 0) - pfatal_with_name (filename); - if (stat (filename, &statbuf) < 0) - pfatal_with_name (filename); - - /* Read contents of file into BUFFER. */ - buffer = XNEWVEC (char, statbuf.st_size + 1); - readlen = read (desc, buffer, (unsigned) statbuf.st_size); - if (readlen < 0) - pfatal_with_name (filename); - buffer[readlen] = 0; - close (desc); - - specs = XNEWVEC (char, readlen + 1); - specs_p = specs; - for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) - { - int skip = 0; - char c = *buffer_p; - if (c == '\r') - { - if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ - skip = 1; - else if (*(buffer_p + 1) == '\n') /* \r\n */ - skip = 1; - else /* \r */ - c = '\n'; - } - if (! skip) - *specs_p++ = c; - } - *specs_p = '\0'; - - free (buffer); - return (specs); -} - -/* Read compilation specs from a file named FILENAME, - replacing the default ones. - - A suffix which starts with `*' is a definition for - one of the machine-specific sub-specs. The "suffix" should be - *asm, *cc1, *cpp, *link, *startfile, etc. - The corresponding spec is stored in asm_spec, etc., - rather than in the `compilers' vector. - - Anything invalid in the file is a fatal error. */ - -static void -read_specs (const char *filename, bool main_p, bool user_p) -{ - char *buffer; - char *p; - - buffer = load_specs (filename); - - /* Scan BUFFER for specs, putting them in the vector. */ - p = buffer; - while (1) - { - char *suffix; - char *spec; - char *in, *out, *p1, *p2, *p3; - - /* Advance P in BUFFER to the next nonblank nocomment line. */ - p = skip_whitespace (p); - if (*p == 0) - break; - - /* Is this a special command that starts with '%'? */ - /* Don't allow this for the main specs file, since it would - encourage people to overwrite it. */ - if (*p == '%' && !main_p) - { - p1 = p; - while (*p && *p != '\n') - p++; - - /* Skip '\n'. */ - p++; - - if (!strncmp (p1, "%include", sizeof ("%include") - 1) - && (p1[sizeof "%include" - 1] == ' ' - || p1[sizeof "%include" - 1] == '\t')) - { - char *new_filename; - - p1 += sizeof ("%include"); - while (*p1 == ' ' || *p1 == '\t') - p1++; - - if (*p1++ != '<' || p[-2] != '>') - fatal_error ("specs %%include syntax malformed after " - "%ld characters", - (long) (p1 - buffer + 1)); - - p[-2] = '\0'; - new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); - read_specs (new_filename ? new_filename : p1, false, user_p); - continue; - } - else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) - && (p1[sizeof "%include_noerr" - 1] == ' ' - || p1[sizeof "%include_noerr" - 1] == '\t')) - { - char *new_filename; - - p1 += sizeof "%include_noerr"; - while (*p1 == ' ' || *p1 == '\t') - p1++; - - if (*p1++ != '<' || p[-2] != '>') - fatal_error ("specs %%include syntax malformed after " - "%ld characters", - (long) (p1 - buffer + 1)); - - p[-2] = '\0'; - new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); - if (new_filename) - read_specs (new_filename, false, user_p); - else if (verbose_flag) - fnotice (stderr, "could not find specs file %s\n", p1); - continue; - } - else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) - && (p1[sizeof "%rename" - 1] == ' ' - || p1[sizeof "%rename" - 1] == '\t')) - { - int name_len; - struct spec_list *sl; - struct spec_list *newsl; - - /* Get original name. */ - p1 += sizeof "%rename"; - while (*p1 == ' ' || *p1 == '\t') - p1++; - - if (! ISALPHA ((unsigned char) *p1)) - fatal_error ("specs %%rename syntax malformed after " - "%ld characters", - (long) (p1 - buffer)); - - p2 = p1; - while (*p2 && !ISSPACE ((unsigned char) *p2)) - p2++; - - if (*p2 != ' ' && *p2 != '\t') - fatal_error ("specs %%rename syntax malformed after " - "%ld characters", - (long) (p2 - buffer)); - - name_len = p2 - p1; - *p2++ = '\0'; - while (*p2 == ' ' || *p2 == '\t') - p2++; - - if (! ISALPHA ((unsigned char) *p2)) - fatal_error ("specs %%rename syntax malformed after " - "%ld characters", - (long) (p2 - buffer)); - - /* Get new spec name. */ - p3 = p2; - while (*p3 && !ISSPACE ((unsigned char) *p3)) - p3++; - - if (p3 != p - 1) - fatal_error ("specs %%rename syntax malformed after " - "%ld characters", - (long) (p3 - buffer)); - *p3 = '\0'; - - for (sl = specs; sl; sl = sl->next) - if (name_len == sl->name_len && !strcmp (sl->name, p1)) - break; - - if (!sl) - fatal_error ("specs %s spec was not found to be renamed", p1); - - if (strcmp (p1, p2) == 0) - continue; - - for (newsl = specs; newsl; newsl = newsl->next) - if (strcmp (newsl->name, p2) == 0) - fatal_error ("%s: attempt to rename spec %qs to " - "already defined spec %qs", - filename, p1, p2); - - if (verbose_flag) - { - fnotice (stderr, "rename spec %s to %s\n", p1, p2); -#ifdef DEBUG_SPECS - fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec)); -#endif - } - - set_spec (p2, *(sl->ptr_spec), user_p); - if (sl->alloc_p) - free (CONST_CAST (char *, *(sl->ptr_spec))); - - *(sl->ptr_spec) = ""; - sl->alloc_p = 0; - continue; - } - else - fatal_error ("specs unknown %% command after %ld characters", - (long) (p1 - buffer)); - } - - /* Find the colon that should end the suffix. */ - p1 = p; - while (*p1 && *p1 != ':' && *p1 != '\n') - p1++; - - /* The colon shouldn't be missing. */ - if (*p1 != ':') - fatal_error ("specs file malformed after %ld characters", - (long) (p1 - buffer)); - - /* Skip back over trailing whitespace. */ - p2 = p1; - while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) - p2--; - - /* Copy the suffix to a string. */ - suffix = save_string (p, p2 - p); - /* Find the next line. */ - p = skip_whitespace (p1 + 1); - if (p[1] == 0) - fatal_error ("specs file malformed after %ld characters", - (long) (p - buffer)); - - p1 = p; - /* Find next blank line or end of string. */ - while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) - p1++; - - /* Specs end at the blank line and do not include the newline. */ - spec = save_string (p, p1 - p); - p = p1; - - /* Delete backslash-newline sequences from the spec. */ - in = spec; - out = spec; - while (*in != 0) - { - if (in[0] == '\\' && in[1] == '\n') - in += 2; - else if (in[0] == '#') - while (*in && *in != '\n') - in++; - - else - *out++ = *in++; - } - *out = 0; - - if (suffix[0] == '*') - { - if (! strcmp (suffix, "*link_command")) - link_command_spec = spec; - else - set_spec (suffix + 1, spec, user_p); - } - else - { - /* Add this pair to the vector. */ - compilers - = XRESIZEVEC (struct compiler, compilers, n_compilers + 2); - - compilers[n_compilers].suffix = suffix; - compilers[n_compilers].spec = spec; - n_compilers++; - memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); - } - - if (*suffix == 0) - link_command_spec = spec; - } - - if (link_command_spec == 0) - fatal_error ("spec file has no spec for linking"); -} - -/* Record the names of temporary files we tell compilers to write, - and delete them at the end of the run. */ - -/* This is the common prefix we use to make temp file names. - It is chosen once for each run of this program. - It is substituted into a spec by %g or %j. - Thus, all temp file names contain this prefix. - In practice, all temp file names start with this prefix. - - This prefix comes from the envvar TMPDIR if it is defined; - otherwise, from the P_tmpdir macro if that is defined; - otherwise, in /usr/tmp or /tmp; - or finally the current directory if all else fails. */ - -static const char *temp_filename; - -/* Length of the prefix. */ - -static int temp_filename_length; - -/* Define the list of temporary files to delete. */ - -struct temp_file -{ - const char *name; - struct temp_file *next; -}; - -/* Queue of files to delete on success or failure of compilation. */ -static struct temp_file *always_delete_queue; -/* Queue of files to delete on failure of compilation. */ -static struct temp_file *failure_delete_queue; - -/* Record FILENAME as a file to be deleted automatically. - ALWAYS_DELETE nonzero means delete it if all compilation succeeds; - otherwise delete it in any case. - FAIL_DELETE nonzero means delete it if a compilation step fails; - otherwise delete it in any case. */ - -void -record_temp_file (const char *filename, int always_delete, int fail_delete) -{ - char *const name = xstrdup (filename); - - if (always_delete) - { - struct temp_file *temp; - for (temp = always_delete_queue; temp; temp = temp->next) - if (! filename_cmp (name, temp->name)) - goto already1; - - temp = XNEW (struct temp_file); - temp->next = always_delete_queue; - temp->name = name; - always_delete_queue = temp; - - already1:; - } - - if (fail_delete) - { - struct temp_file *temp; - for (temp = failure_delete_queue; temp; temp = temp->next) - if (! filename_cmp (name, temp->name)) - { - free (name); - goto already2; - } - - temp = XNEW (struct temp_file); - temp->next = failure_delete_queue; - temp->name = name; - failure_delete_queue = temp; - - already2:; - } -} - -/* Delete all the temporary files whose names we previously recorded. */ - -#ifndef DELETE_IF_ORDINARY -#define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ -do \ - { \ - if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ - if (unlink (NAME) < 0) \ - if (VERBOSE_FLAG) \ - perror_with_name (NAME); \ - } while (0) -#endif - -static void -delete_if_ordinary (const char *name) -{ - struct stat st; -#ifdef DEBUG - int i, c; - - printf ("Delete %s? (y or n) ", name); - fflush (stdout); - i = getchar (); - if (i != '\n') - while ((c = getchar ()) != '\n' && c != EOF) - ; - - if (i == 'y' || i == 'Y') -#endif /* DEBUG */ - DELETE_IF_ORDINARY (name, st, verbose_flag); -} - -static void -delete_temp_files (void) -{ - struct temp_file *temp; - - for (temp = always_delete_queue; temp; temp = temp->next) - delete_if_ordinary (temp->name); - always_delete_queue = 0; -} - -/* Delete all the files to be deleted on error. */ - -static void -delete_failure_queue (void) -{ - struct temp_file *temp; - - for (temp = failure_delete_queue; temp; temp = temp->next) - delete_if_ordinary (temp->name); -} - -static void -clear_failure_queue (void) -{ - failure_delete_queue = 0; -} - -/* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK - returns non-NULL. - If DO_MULTI is true iterate over the paths twice, first with multilib - suffix then without, otherwise iterate over the paths once without - adding a multilib suffix. When DO_MULTI is true, some attempt is made - to avoid visiting the same path twice, but we could do better. For - instance, /usr/lib/../lib is considered different from /usr/lib. - At least EXTRA_SPACE chars past the end of the path passed to - CALLBACK are available for use by the callback. - CALLBACK_INFO allows extra parameters to be passed to CALLBACK. - - Returns the value returned by CALLBACK. */ - -static void * -for_each_path (const struct path_prefix *paths, - bool do_multi, - size_t extra_space, - void *(*callback) (char *, void *), - void *callback_info) -{ - struct prefix_list *pl; - const char *multi_dir = NULL; - const char *multi_os_dir = NULL; - const char *multiarch_suffix = NULL; - const char *multi_suffix; - const char *just_multi_suffix; - char *path = NULL; - void *ret = NULL; - bool skip_multi_dir = false; - bool skip_multi_os_dir = false; - - multi_suffix = machine_suffix; - just_multi_suffix = just_machine_suffix; - if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0) - { - multi_dir = concat (multilib_dir, dir_separator_str, NULL); - multi_suffix = concat (multi_suffix, multi_dir, NULL); - just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); - } - if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0) - multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); - if (multiarch_dir) - multiarch_suffix = concat (multiarch_dir, dir_separator_str, NULL); - - while (1) - { - size_t multi_dir_len = 0; - size_t multi_os_dir_len = 0; - size_t multiarch_len = 0; - size_t suffix_len; - size_t just_suffix_len; - size_t len; - - if (multi_dir) - multi_dir_len = strlen (multi_dir); - if (multi_os_dir) - multi_os_dir_len = strlen (multi_os_dir); - if (multiarch_suffix) - multiarch_len = strlen (multiarch_suffix); - suffix_len = strlen (multi_suffix); - just_suffix_len = strlen (just_multi_suffix); - - if (path == NULL) - { - len = paths->max_len + extra_space + 1; - len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len); - path = XNEWVEC (char, len); - } - - for (pl = paths->plist; pl != 0; pl = pl->next) - { - len = strlen (pl->prefix); - memcpy (path, pl->prefix, len); - - /* Look first in MACHINE/VERSION subdirectory. */ - if (!skip_multi_dir) - { - memcpy (path + len, multi_suffix, suffix_len + 1); - ret = callback (path, callback_info); - if (ret) - break; - } - - /* Some paths are tried with just the machine (ie. target) - subdir. This is used for finding as, ld, etc. */ - if (!skip_multi_dir - && pl->require_machine_suffix == 2) - { - memcpy (path + len, just_multi_suffix, just_suffix_len + 1); - ret = callback (path, callback_info); - if (ret) - break; - } - - /* Now try the multiarch path. */ - if (!skip_multi_dir - && !pl->require_machine_suffix && multiarch_dir) - { - memcpy (path + len, multiarch_suffix, multiarch_len + 1); - ret = callback (path, callback_info); - if (ret) - break; - } - - /* Now try the base path. */ - if (!pl->require_machine_suffix - && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) - { - const char *this_multi; - size_t this_multi_len; - - if (pl->os_multilib) - { - this_multi = multi_os_dir; - this_multi_len = multi_os_dir_len; - } - else - { - this_multi = multi_dir; - this_multi_len = multi_dir_len; - } - - if (this_multi_len) - memcpy (path + len, this_multi, this_multi_len + 1); - else - path[len] = '\0'; - - ret = callback (path, callback_info); - if (ret) - break; - } - } - if (pl) - break; - - if (multi_dir == NULL && multi_os_dir == NULL) - break; - - /* Run through the paths again, this time without multilibs. - Don't repeat any we have already seen. */ - if (multi_dir) - { - free (CONST_CAST (char *, multi_dir)); - multi_dir = NULL; - free (CONST_CAST (char *, multi_suffix)); - multi_suffix = machine_suffix; - free (CONST_CAST (char *, just_multi_suffix)); - just_multi_suffix = just_machine_suffix; - } - else - skip_multi_dir = true; - if (multi_os_dir) - { - free (CONST_CAST (char *, multi_os_dir)); - multi_os_dir = NULL; - } - else - skip_multi_os_dir = true; - } - - if (multi_dir) - { - free (CONST_CAST (char *, multi_dir)); - free (CONST_CAST (char *, multi_suffix)); - free (CONST_CAST (char *, just_multi_suffix)); - } - if (multi_os_dir) - free (CONST_CAST (char *, multi_os_dir)); - if (ret != path) - free (path); - return ret; -} - -/* Callback for build_search_list. Adds path to obstack being built. */ - -struct add_to_obstack_info { - struct obstack *ob; - bool check_dir; - bool first_time; -}; - -static void * -add_to_obstack (char *path, void *data) -{ - struct add_to_obstack_info *info = (struct add_to_obstack_info *) data; - - if (info->check_dir && !is_directory (path, false)) - return NULL; - - if (!info->first_time) - obstack_1grow (info->ob, PATH_SEPARATOR); - - obstack_grow (info->ob, path, strlen (path)); - - info->first_time = false; - return NULL; -} - -/* Add or change the value of an environment variable, outputting the - change to standard error if in verbose mode. */ -static void -xputenv (const char *string) -{ - if (verbose_flag) - fnotice (stderr, "%s\n", string); - putenv (CONST_CAST (char *, string)); -} - -/* Build a list of search directories from PATHS. - PREFIX is a string to prepend to the list. - If CHECK_DIR_P is true we ensure the directory exists. - If DO_MULTI is true, multilib paths are output first, then - non-multilib paths. - This is used mostly by putenv_from_prefixes so we use `collect_obstack'. - It is also used by the --print-search-dirs flag. */ - -static char * -build_search_list (const struct path_prefix *paths, const char *prefix, - bool check_dir, bool do_multi) -{ - struct add_to_obstack_info info; - - info.ob = &collect_obstack; - info.check_dir = check_dir; - info.first_time = true; - - obstack_grow (&collect_obstack, prefix, strlen (prefix)); - obstack_1grow (&collect_obstack, '='); - - for_each_path (paths, do_multi, 0, add_to_obstack, &info); - - obstack_1grow (&collect_obstack, '\0'); - return XOBFINISH (&collect_obstack, char *); -} - -/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables - for collect. */ - -static void -putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, - bool do_multi) -{ - xputenv (build_search_list (paths, env_var, true, do_multi)); -} - -/* Check whether NAME can be accessed in MODE. This is like access, - except that it never considers directories to be executable. */ - -static int -access_check (const char *name, int mode) -{ - if (mode == X_OK) - { - struct stat st; - - if (stat (name, &st) < 0 - || S_ISDIR (st.st_mode)) - return -1; - } - - return access (name, mode); -} - -/* Callback for find_a_file. Appends the file name to the directory - path. If the resulting file exists in the right mode, return the - full pathname to the file. */ - -struct file_at_path_info { - const char *name; - const char *suffix; - int name_len; - int suffix_len; - int mode; -}; - -static void * -file_at_path (char *path, void *data) -{ - struct file_at_path_info *info = (struct file_at_path_info *) data; - size_t len = strlen (path); - - memcpy (path + len, info->name, info->name_len); - len += info->name_len; - - /* Some systems have a suffix for executable files. - So try appending that first. */ - if (info->suffix_len) - { - memcpy (path + len, info->suffix, info->suffix_len + 1); - if (access_check (path, info->mode) == 0) - return path; - } - - path[len] = '\0'; - if (access_check (path, info->mode) == 0) - return path; - - return NULL; -} - -/* Search for NAME using the prefix list PREFIXES. MODE is passed to - access to check permissions. If DO_MULTI is true, search multilib - paths then non-multilib paths, otherwise do not search multilib paths. - Return 0 if not found, otherwise return its name, allocated with malloc. */ - -static char * -find_a_file (const struct path_prefix *pprefix, const char *name, int mode, - bool do_multi) -{ - struct file_at_path_info info; - -#ifdef DEFAULT_ASSEMBLER - if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) - return xstrdup (DEFAULT_ASSEMBLER); -#endif - -#ifdef DEFAULT_LINKER - if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0) - return xstrdup (DEFAULT_LINKER); -#endif - - /* Determine the filename to execute (special case for absolute paths). */ - - if (IS_ABSOLUTE_PATH (name)) - { - if (access (name, mode) == 0) - return xstrdup (name); - - return NULL; - } - - info.name = name; - info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; - info.name_len = strlen (info.name); - info.suffix_len = strlen (info.suffix); - info.mode = mode; - - return (char*) for_each_path (pprefix, do_multi, - info.name_len + info.suffix_len, - file_at_path, &info); -} - -/* Ranking of prefixes in the sort list. -B prefixes are put before - all others. */ - -enum path_prefix_priority -{ - PREFIX_PRIORITY_B_OPT, - PREFIX_PRIORITY_LAST -}; - -/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending - order according to PRIORITY. Within each PRIORITY, new entries are - appended. - - If WARN is nonzero, we will warn if no file is found - through this prefix. WARN should point to an int - which will be set to 1 if this entry is used. - - COMPONENT is the value to be passed to update_path. - - REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without - the complete value of machine_suffix. - 2 means try both machine_suffix and just_machine_suffix. */ - -static void -add_prefix (struct path_prefix *pprefix, const char *prefix, - const char *component, /* enum prefix_priority */ int priority, - int require_machine_suffix, int os_multilib) -{ - struct prefix_list *pl, **prev; - int len; - - for (prev = &pprefix->plist; - (*prev) != NULL && (*prev)->priority <= priority; - prev = &(*prev)->next) - ; - - /* Keep track of the longest prefix. */ - - prefix = update_path (prefix, component); - len = strlen (prefix); - if (len > pprefix->max_len) - pprefix->max_len = len; - - pl = XNEW (struct prefix_list); - pl->prefix = prefix; - pl->require_machine_suffix = require_machine_suffix; - pl->priority = priority; - pl->os_multilib = os_multilib; - - /* Insert after PREV. */ - pl->next = (*prev); - (*prev) = pl; -} - -/* Same as add_prefix, but prepending target_system_root to prefix. */ -/* The target_system_root prefix has been relocated by gcc_exec_prefix. */ -static void -add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, - const char *component, - /* enum prefix_priority */ int priority, - int require_machine_suffix, int os_multilib) -{ - if (!IS_ABSOLUTE_PATH (prefix)) - fatal_error ("system path %qs is not absolute", prefix); - - if (target_system_root) - { - char *sysroot_no_trailing_dir_separator = xstrdup (target_system_root); - size_t sysroot_len = strlen (target_system_root); - - if (sysroot_len > 0 - && target_system_root[sysroot_len - 1] == DIR_SEPARATOR) - sysroot_no_trailing_dir_separator[sysroot_len - 1] = '\0'; - - if (target_sysroot_suffix) - prefix = concat (sysroot_no_trailing_dir_separator, - target_sysroot_suffix, prefix, NULL); - else - prefix = concat (sysroot_no_trailing_dir_separator, prefix, NULL); - - free (sysroot_no_trailing_dir_separator); - - /* We have to override this because GCC's notion of sysroot - moves along with GCC. */ - component = "GCC"; - } - - add_prefix (pprefix, prefix, component, priority, - require_machine_suffix, os_multilib); -} - -/* Execute the command specified by the arguments on the current line of spec. - When using pipes, this includes several piped-together commands - with `|' between them. - - Return 0 if successful, -1 if failed. */ - -static int -execute (void) -{ - int i; - int n_commands; /* # of command. */ - char *string; - struct pex_obj *pex; - struct command - { - const char *prog; /* program name. */ - const char **argv; /* vector of args. */ - }; - const char *arg; - - struct command *commands; /* each command buffer with above info. */ - - gcc_assert (!processing_spec_function); - - if (wrapper_string) - { - string = find_a_file (&exec_prefixes, - argbuf[0], X_OK, false); - if (string) - argbuf[0] = string; - insert_wrapper (wrapper_string); - } - - /* Count # of piped commands. */ - for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) - if (strcmp (arg, "|") == 0) - n_commands++; - - /* Get storage for each command. */ - commands = (struct command *) alloca (n_commands * sizeof (struct command)); - - /* Split argbuf into its separate piped processes, - and record info about each one. - Also search for the programs that are to be run. */ - - argbuf.safe_push (0); - - commands[0].prog = argbuf[0]; /* first command. */ - commands[0].argv = argbuf.address (); - - if (!wrapper_string) - { - string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); - commands[0].argv[0] = (string) ? string : commands[0].argv[0]; - } - - for (n_commands = 1, i = 0; argbuf.iterate (i, &arg); i++) - if (arg && strcmp (arg, "|") == 0) - { /* each command. */ -#if defined (__MSDOS__) || defined (OS2) || defined (VMS) - fatal_error ("-pipe not supported"); -#endif - argbuf[i] = 0; /* Termination of - command args. */ - commands[n_commands].prog = argbuf[i + 1]; - commands[n_commands].argv - = &(argbuf.address ())[i + 1]; - string = find_a_file (&exec_prefixes, commands[n_commands].prog, - X_OK, false); - if (string) - commands[n_commands].argv[0] = string; - n_commands++; - } - - /* If -v, print what we are about to do, and maybe query. */ - - if (verbose_flag) - { - /* For help listings, put a blank line between sub-processes. */ - if (print_help_list) - fputc ('\n', stderr); - - /* Print each piped command as a separate line. */ - for (i = 0; i < n_commands; i++) - { - const char *const *j; - - if (verbose_only_flag) - { - for (j = commands[i].argv; *j; j++) - { - const char *p; - for (p = *j; *p; ++p) - if (!ISALNUM ((unsigned char) *p) - && *p != '_' && *p != '/' && *p != '-' && *p != '.') - break; - if (*p || !*j) - { - fprintf (stderr, " \""); - for (p = *j; *p; ++p) - { - if (*p == '"' || *p == '\\' || *p == '$') - fputc ('\\', stderr); - fputc (*p, stderr); - } - fputc ('"', stderr); - } - /* If it's empty, print "". */ - else if (!**j) - fprintf (stderr, " \"\""); - else - fprintf (stderr, " %s", *j); - } - } - else - for (j = commands[i].argv; *j; j++) - /* If it's empty, print "". */ - if (!**j) - fprintf (stderr, " \"\""); - else - fprintf (stderr, " %s", *j); - - /* Print a pipe symbol after all but the last command. */ - if (i + 1 != n_commands) - fprintf (stderr, " |"); - fprintf (stderr, "\n"); - } - fflush (stderr); - if (verbose_only_flag != 0) - { - /* verbose_only_flag should act as if the spec was - executed, so increment execution_count before - returning. This prevents spurious warnings about - unused linker input files, etc. */ - execution_count++; - return 0; - } -#ifdef DEBUG - fnotice (stderr, "\nGo ahead? (y or n) "); - fflush (stderr); - i = getchar (); - if (i != '\n') - while (getchar () != '\n') - ; - - if (i != 'y' && i != 'Y') - return 0; -#endif /* DEBUG */ - } - -#ifdef ENABLE_VALGRIND_CHECKING - /* Run the each command through valgrind. To simplify prepending the - path to valgrind and the option "-q" (for quiet operation unless - something triggers), we allocate a separate argv array. */ - - for (i = 0; i < n_commands; i++) - { - const char **argv; - int argc; - int j; - - for (argc = 0; commands[i].argv[argc] != NULL; argc++) - ; - - argv = XALLOCAVEC (const char *, argc + 3); - - argv[0] = VALGRIND_PATH; - argv[1] = "-q"; - for (j = 2; j < argc + 2; j++) - argv[j] = commands[i].argv[j - 2]; - argv[j] = NULL; - - commands[i].argv = argv; - commands[i].prog = argv[0]; - } -#endif - - /* Run each piped subprocess. */ - - pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file) - ? PEX_RECORD_TIMES : 0), - progname, temp_filename); - if (pex == NULL) - fatal_error ("pex_init failed: %m"); - - for (i = 0; i < n_commands; i++) - { - const char *errmsg; - int err; - const char *string = commands[i].argv[0]; - - errmsg = pex_run (pex, - ((i + 1 == n_commands ? PEX_LAST : 0) - | (string == commands[i].prog ? PEX_SEARCH : 0)), - string, CONST_CAST (char **, commands[i].argv), - NULL, NULL, &err); - if (errmsg != NULL) - { - if (err == 0) - fatal_error (errmsg); - else - { - errno = err; - pfatal_with_name (errmsg); - } - } - - if (string != commands[i].prog) - free (CONST_CAST (char *, string)); - } - - execution_count++; - - /* Wait for all the subprocesses to finish. */ - - { - int *statuses; - struct pex_time *times = NULL; - int ret_code = 0; - - statuses = (int *) alloca (n_commands * sizeof (int)); - if (!pex_get_status (pex, n_commands, statuses)) - fatal_error ("failed to get exit status: %m"); - - if (report_times || report_times_to_file) - { - times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time)); - if (!pex_get_times (pex, n_commands, times)) - fatal_error ("failed to get process times: %m"); - } - - pex_free (pex); - - for (i = 0; i < n_commands; ++i) - { - int status = statuses[i]; - - if (WIFSIGNALED (status)) - { -#ifdef SIGPIPE - /* SIGPIPE is a special case. It happens in -pipe mode - when the compiler dies before the preprocessor is done, - or the assembler dies before the compiler is done. - There's generally been an error already, and this is - just fallout. So don't generate another error unless - we would otherwise have succeeded. */ - if (WTERMSIG (status) == SIGPIPE - && (signal_count || greatest_status >= MIN_FATAL_STATUS)) - { - signal_count++; - ret_code = -1; - } - else -#endif - internal_error ("%s (program %s)", - strsignal (WTERMSIG (status)), commands[i].prog); - } - else if (WIFEXITED (status) - && WEXITSTATUS (status) >= MIN_FATAL_STATUS) - { - if (WEXITSTATUS (status) > greatest_status) - greatest_status = WEXITSTATUS (status); - ret_code = -1; - } - - if (report_times || report_times_to_file) - { - struct pex_time *pt = ×[i]; - double ut, st; - - ut = ((double) pt->user_seconds - + (double) pt->user_microseconds / 1.0e6); - st = ((double) pt->system_seconds - + (double) pt->system_microseconds / 1.0e6); - - if (ut + st != 0) - { - if (report_times) - fnotice (stderr, "# %s %.2f %.2f\n", - commands[i].prog, ut, st); - - if (report_times_to_file) - { - int c = 0; - const char *const *j; - - fprintf (report_times_to_file, "%g %g", ut, st); - - for (j = &commands[i].prog; *j; j = &commands[i].argv[++c]) - { - const char *p; - for (p = *j; *p; ++p) - if (*p == '"' || *p == '\\' || *p == '$' - || ISSPACE (*p)) - break; - - if (*p) - { - fprintf (report_times_to_file, " \""); - for (p = *j; *p; ++p) - { - if (*p == '"' || *p == '\\' || *p == '$') - fputc ('\\', report_times_to_file); - fputc (*p, report_times_to_file); - } - fputc ('"', report_times_to_file); - } - else - fprintf (report_times_to_file, " %s", *j); - } - - fputc ('\n', report_times_to_file); - } - } - } - } - - return ret_code; - } -} - -/* Find all the switches given to us - and make a vector describing them. - The elements of the vector are strings, one per switch given. - If a switch uses following arguments, then the `part1' field - is the switch itself and the `args' field - is a null-terminated vector containing the following arguments. - Bits in the `live_cond' field are: - SWITCH_LIVE to indicate this switch is true in a conditional spec. - SWITCH_FALSE to indicate this switch is overridden by a later switch. - SWITCH_IGNORE to indicate this switch should be ignored (used in %<S). - SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored - in all do_spec calls afterwards. Used for %<S from self specs. - The `validated' field is nonzero if any spec has looked at this switch; - if it remains zero at the end of the run, it must be meaningless. */ - -#define SWITCH_LIVE (1 << 0) -#define SWITCH_FALSE (1 << 1) -#define SWITCH_IGNORE (1 << 2) -#define SWITCH_IGNORE_PERMANENTLY (1 << 3) -#define SWITCH_KEEP_FOR_GCC (1 << 4) - -struct switchstr -{ - const char *part1; - const char **args; - unsigned int live_cond; - bool known; - bool validated; - bool ordering; -}; - -static struct switchstr *switches; - -static int n_switches; - -static int n_switches_alloc; - -/* Set to zero if -fcompare-debug is disabled, positive if it's - enabled and we're running the first compilation, negative if it's - enabled and we're running the second compilation. For most of the - time, it's in the range -1..1, but it can be temporarily set to 2 - or 3 to indicate that the -fcompare-debug flags didn't come from - the command-line, but rather from the GCC_COMPARE_DEBUG environment - variable, until a synthesized -fcompare-debug flag is added to the - command line. */ -int compare_debug; - -/* Set to nonzero if we've seen the -fcompare-debug-second flag. */ -int compare_debug_second; - -/* Set to the flags that should be passed to the second compilation in - a -fcompare-debug compilation. */ -const char *compare_debug_opt; - -static struct switchstr *switches_debug_check[2]; - -static int n_switches_debug_check[2]; - -static int n_switches_alloc_debug_check[2]; - -static char *debug_check_temp_file[2]; - -/* Language is one of three things: - - 1) The name of a real programming language. - 2) NULL, indicating that no one has figured out - what it is yet. - 3) '*', indicating that the file should be passed - to the linker. */ -struct infile -{ - const char *name; - const char *language; - struct compiler *incompiler; - bool compiled; - bool preprocessed; -}; - -/* Also a vector of input files specified. */ - -static struct infile *infiles; - -int n_infiles; - -static int n_infiles_alloc; - -/* True if multiple input files are being compiled to a single - assembly file. */ - -static bool combine_inputs; - -/* This counts the number of libraries added by lang_specific_driver, so that - we can tell if there were any user supplied any files or libraries. */ - -static int added_libraries; - -/* And a vector of corresponding output files is made up later. */ - -const char **outfiles; - -#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) - -/* Convert NAME to a new name if it is the standard suffix. DO_EXE - is true if we should look for an executable suffix. DO_OBJ - is true if we should look for an object suffix. */ - -static const char * -convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, - int do_obj ATTRIBUTE_UNUSED) -{ -#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) - int i; -#endif - int len; - - if (name == NULL) - return NULL; - - len = strlen (name); - -#ifdef HAVE_TARGET_OBJECT_SUFFIX - /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ - if (do_obj && len > 2 - && name[len - 2] == '.' - && name[len - 1] == 'o') - { - obstack_grow (&obstack, name, len - 2); - obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); - name = XOBFINISH (&obstack, const char *); - } -#endif - -#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) - /* If there is no filetype, make it the executable suffix (which includes - the "."). But don't get confused if we have just "-o". */ - if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) - return name; - - for (i = len - 1; i >= 0; i--) - if (IS_DIR_SEPARATOR (name[i])) - break; - - for (i++; i < len; i++) - if (name[i] == '.') - return name; - - obstack_grow (&obstack, name, len); - obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, - strlen (TARGET_EXECUTABLE_SUFFIX)); - name = XOBFINISH (&obstack, const char *); -#endif - - return name; -} -#endif - -/* Display the command line switches accepted by gcc. */ -static void -display_help (void) -{ - printf (_("Usage: %s [options] file...\n"), progname); - fputs (_("Options:\n"), stdout); - - fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); - fputs (_(" --help Display this information\n"), stdout); - fputs (_(" --target-help Display target specific command line options\n"), stdout); - fputs (_(" --help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]\n"), stdout); - fputs (_(" Display specific types of command line options\n"), stdout); - if (! verbose_flag) - fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); - fputs (_(" --version Display compiler version information\n"), stdout); - fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); - fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); - fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); - fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); - fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); - fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); - fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); - fputs (_("\ - -print-multiarch Display the target's normalized GNU triplet, used as\n\ - a component in the library path\n"), stdout); - fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); - fputs (_("\ - -print-multi-lib Display the mapping between command line options and\n\ - multiple library search directories\n"), stdout); - fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout); - fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout); - fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout); - fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); - fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); - fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); - fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout); - fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout); - fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); - fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); - fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout); - fputs (_("\ - -no-canonical-prefixes Do not canonicalize paths when building relative\n\ - prefixes to other gcc components\n"), stdout); - fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); - fputs (_(" -time Time the execution of each subprocess\n"), stdout); - fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); - fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); - fputs (_("\ - --sysroot=<directory> Use <directory> as the root directory for headers\n\ - and libraries\n"), stdout); - fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); - fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); - fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); - fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); - fputs (_(" -S Compile only; do not assemble or link\n"), stdout); - fputs (_(" -c Compile and assemble, but do not link\n"), stdout); - fputs (_(" -o <file> Place the output into <file>\n"), stdout); - fputs (_(" -pie Create a position independent executable\n"), stdout); - fputs (_(" -shared Create a shared library\n"), stdout); - fputs (_("\ - -x <language> Specify the language of the following input files\n\ - Permissible languages include: c c++ assembler none\n\ - 'none' means revert to the default behavior of\n\ - guessing the language based on the file's extension\n\ -"), stdout); - - printf (_("\ -\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ - passed on to the various sub-processes invoked by %s. In order to pass\n\ - other options on to these processes the -W<letter> options must be used.\n\ -"), progname); - - /* The rest of the options are displayed by invocations of the various - sub-processes. */ -} - -static void -add_preprocessor_option (const char *option, int len) -{ - preprocessor_options.safe_push (save_string (option, len)); -} - -static void -add_assembler_option (const char *option, int len) -{ - assembler_options.safe_push (save_string (option, len)); -} - -static void -add_linker_option (const char *option, int len) -{ - linker_options.safe_push (save_string (option, len)); -} - -/* Allocate space for an input file in infiles. */ - -static void -alloc_infile (void) -{ - if (n_infiles_alloc == 0) - { - n_infiles_alloc = 16; - infiles = XNEWVEC (struct infile, n_infiles_alloc); - } - else if (n_infiles_alloc == n_infiles) - { - n_infiles_alloc *= 2; - infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc); - } -} - -/* Store an input file with the given NAME and LANGUAGE in - infiles. */ - -static void -add_infile (const char *name, const char *language) -{ - alloc_infile (); - infiles[n_infiles].name = name; - infiles[n_infiles++].language = language; -} - -/* Allocate space for a switch in switches. */ - -static void -alloc_switch (void) -{ - if (n_switches_alloc == 0) - { - n_switches_alloc = 16; - switches = XNEWVEC (struct switchstr, n_switches_alloc); - } - else if (n_switches_alloc == n_switches) - { - n_switches_alloc *= 2; - switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc); - } -} - -/* Save an option OPT with N_ARGS arguments in array ARGS, marking it - as validated if VALIDATED and KNOWN if it is an internal switch. */ - -static void -save_switch (const char *opt, size_t n_args, const char *const *args, - bool validated, bool known) -{ - alloc_switch (); - switches[n_switches].part1 = opt + 1; - if (n_args == 0) - switches[n_switches].args = 0; - else - { - switches[n_switches].args = XNEWVEC (const char *, n_args + 1); - memcpy (switches[n_switches].args, args, n_args * sizeof (const char *)); - switches[n_switches].args[n_args] = NULL; - } - - switches[n_switches].live_cond = 0; - switches[n_switches].validated = validated; - switches[n_switches].known = known; - switches[n_switches].ordering = 0; - n_switches++; -} - -/* Handle an option DECODED that is unknown to the option-processing - machinery. */ - -static bool -driver_unknown_option_callback (const struct cl_decoded_option *decoded) -{ - const char *opt = decoded->arg; - if (opt[1] == 'W' && opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-' - && !(decoded->errors & CL_ERR_NEGATIVE)) - { - /* Leave unknown -Wno-* options for the compiler proper, to be - diagnosed only if there are warnings. */ - save_switch (decoded->canonical_option[0], - decoded->canonical_option_num_elements - 1, - &decoded->canonical_option[1], false, true); - return false; - } - if (decoded->opt_index == OPT_SPECIAL_unknown) - { - /* Give it a chance to define it a a spec file. */ - save_switch (decoded->canonical_option[0], - decoded->canonical_option_num_elements - 1, - &decoded->canonical_option[1], false, false); - return false; - } - else - return true; -} - -/* Handle an option DECODED that is not marked as CL_DRIVER. - LANG_MASK will always be CL_DRIVER. */ - -static void -driver_wrong_lang_callback (const struct cl_decoded_option *decoded, - unsigned int lang_mask ATTRIBUTE_UNUSED) -{ - /* At this point, non-driver options are accepted (and expected to - be passed down by specs) unless marked to be rejected by the - driver. Options to be rejected by the driver but accepted by the - compilers proper are treated just like completely unknown - options. */ - const struct cl_option *option = &cl_options[decoded->opt_index]; - - if (option->cl_reject_driver) - error ("unrecognized command line option %qs", - decoded->orig_option_with_args_text); - else - save_switch (decoded->canonical_option[0], - decoded->canonical_option_num_elements - 1, - &decoded->canonical_option[1], false, true); -} - -static const char *spec_lang = 0; -static int last_language_n_infiles; - -/* Handle a driver option; arguments and return value as for - handle_option. */ - -static bool -driver_handle_option (struct gcc_options *opts, - struct gcc_options *opts_set, - const struct cl_decoded_option *decoded, - unsigned int lang_mask ATTRIBUTE_UNUSED, int kind, - location_t loc, - const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED, - diagnostic_context *dc) -{ - size_t opt_index = decoded->opt_index; - const char *arg = decoded->arg; - const char *compare_debug_replacement_opt; - int value = decoded->value; - bool validated = false; - bool do_save = true; - - gcc_assert (opts == &global_options); - gcc_assert (opts_set == &global_options_set); - gcc_assert (kind == DK_UNSPECIFIED); - gcc_assert (loc == UNKNOWN_LOCATION); - gcc_assert (dc == global_dc); - - switch (opt_index) - { - case OPT_dumpspecs: - { - struct spec_list *sl; - init_spec (); - for (sl = specs; sl; sl = sl->next) - printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); - if (link_command_spec) - printf ("*link_command:\n%s\n\n", link_command_spec); - exit (0); - } - - case OPT_dumpversion: - printf ("%s\n", spec_version); - exit (0); - - case OPT_dumpmachine: - printf ("%s\n", spec_machine); - exit (0); - - case OPT__version: - print_version = 1; - - /* CPP driver cannot obtain switch from cc1_options. */ - if (is_cpp_driver) - add_preprocessor_option ("--version", strlen ("--version")); - add_assembler_option ("--version", strlen ("--version")); - add_linker_option ("--version", strlen ("--version")); - break; - - case OPT__help: - print_help_list = 1; - - /* CPP driver cannot obtain switch from cc1_options. */ - if (is_cpp_driver) - add_preprocessor_option ("--help", 6); - add_assembler_option ("--help", 6); - add_linker_option ("--help", 6); - break; - - case OPT__help_: - print_subprocess_help = 2; - break; - - case OPT__target_help: - print_subprocess_help = 1; - - /* CPP driver cannot obtain switch from cc1_options. */ - if (is_cpp_driver) - add_preprocessor_option ("--target-help", 13); - add_assembler_option ("--target-help", 13); - add_linker_option ("--target-help", 13); - break; - - case OPT__no_sysroot_suffix: - case OPT_pass_exit_codes: - case OPT_print_search_dirs: - case OPT_print_file_name_: - case OPT_print_prog_name_: - case OPT_print_multi_lib: - case OPT_print_multi_directory: - case OPT_print_sysroot: - case OPT_print_multi_os_directory: - case OPT_print_multiarch: - case OPT_print_sysroot_headers_suffix: - case OPT_time: - case OPT_wrapper: - /* These options set the variables specified in common.opt - automatically, and do not need to be saved for spec - processing. */ - do_save = false; - break; - - case OPT_print_libgcc_file_name: - print_file_name = "libgcc.a"; - do_save = false; - break; - - case OPT_fcompare_debug_second: - compare_debug_second = 1; - break; - - case OPT_fcompare_debug: - switch (value) - { - case 0: - compare_debug_replacement_opt = "-fcompare-debug="; - arg = ""; - goto compare_debug_with_arg; - - case 1: - compare_debug_replacement_opt = "-fcompare-debug=-gtoggle"; - arg = "-gtoggle"; - goto compare_debug_with_arg; - - default: - gcc_unreachable (); - } - break; - - case OPT_fcompare_debug_: - compare_debug_replacement_opt = decoded->canonical_option[0]; - compare_debug_with_arg: - gcc_assert (decoded->canonical_option_num_elements == 1); - gcc_assert (arg != NULL); - if (*arg) - compare_debug = 1; - else - compare_debug = -1; - if (compare_debug < 0) - compare_debug_opt = NULL; - else - compare_debug_opt = arg; - save_switch (compare_debug_replacement_opt, 0, NULL, validated, true); - return true; - - case OPT_Wa_: - { - int prev, j; - /* Pass the rest of this option to the assembler. */ - - /* Split the argument at commas. */ - prev = 0; - for (j = 0; arg[j]; j++) - if (arg[j] == ',') - { - add_assembler_option (arg + prev, j - prev); - prev = j + 1; - } - - /* Record the part after the last comma. */ - add_assembler_option (arg + prev, j - prev); - } - do_save = false; - break; - - case OPT_Wp_: - { - int prev, j; - /* Pass the rest of this option to the preprocessor. */ - - /* Split the argument at commas. */ - prev = 0; - for (j = 0; arg[j]; j++) - if (arg[j] == ',') - { - add_preprocessor_option (arg + prev, j - prev); - prev = j + 1; - } - - /* Record the part after the last comma. */ - add_preprocessor_option (arg + prev, j - prev); - } - do_save = false; - break; - - case OPT_Wl_: - { - int prev, j; - /* Split the argument at commas. */ - prev = 0; - for (j = 0; arg[j]; j++) - if (arg[j] == ',') - { - add_infile (save_string (arg + prev, j - prev), "*"); - prev = j + 1; - } - /* Record the part after the last comma. */ - add_infile (arg + prev, "*"); - } - do_save = false; - break; - - case OPT_Xlinker: - add_infile (arg, "*"); - do_save = false; - break; - - case OPT_Xpreprocessor: - add_preprocessor_option (arg, strlen (arg)); - do_save = false; - break; - - case OPT_Xassembler: - add_assembler_option (arg, strlen (arg)); - do_save = false; - break; - - case OPT_l: - /* POSIX allows separation of -l and the lib arg; canonicalize - by concatenating -l with its arg */ - add_infile (concat ("-l", arg, NULL), "*"); - do_save = false; - break; - - case OPT_L: - /* Similarly, canonicalize -L for linkers that may not accept - separate arguments. */ - save_switch (concat ("-L", arg, NULL), 0, NULL, validated, true); - return true; - - case OPT_F: - /* Likewise -F. */ - save_switch (concat ("-F", arg, NULL), 0, NULL, validated, true); - return true; - - case OPT_save_temps: - save_temps_flag = SAVE_TEMPS_CWD; - validated = true; - break; - - case OPT_save_temps_: - if (strcmp (arg, "cwd") == 0) - save_temps_flag = SAVE_TEMPS_CWD; - else if (strcmp (arg, "obj") == 0 - || strcmp (arg, "object") == 0) - save_temps_flag = SAVE_TEMPS_OBJ; - else - fatal_error ("%qs is an unknown -save-temps option", - decoded->orig_option_with_args_text); - break; - - case OPT_no_canonical_prefixes: - /* Already handled as a special case, so ignored here. */ - do_save = false; - break; - - case OPT_pipe: - validated = true; - /* These options set the variables specified in common.opt - automatically, but do need to be saved for spec - processing. */ - break; - - case OPT_specs_: - { - struct user_specs *user = XNEW (struct user_specs); - - user->next = (struct user_specs *) 0; - user->filename = arg; - if (user_specs_tail) - user_specs_tail->next = user; - else - user_specs_head = user; - user_specs_tail = user; - } - validated = true; - break; - - case OPT__sysroot_: - target_system_root = arg; - target_system_root_changed = 1; - do_save = false; - break; - - case OPT_time_: - if (report_times_to_file) - fclose (report_times_to_file); - report_times_to_file = fopen (arg, "a"); - do_save = false; - break; - - case OPT____: - /* "-###" - This is similar to -v except that there is no execution - of the commands and the echoed arguments are quoted. It - is intended for use in shell scripts to capture the - driver-generated command line. */ - verbose_only_flag++; - verbose_flag = 1; - do_save = false; - break; - - case OPT_B: - { - size_t len = strlen (arg); - - /* Catch the case where the user has forgotten to append a - directory separator to the path. Note, they may be using - -B to add an executable name prefix, eg "i386-elf-", in - order to distinguish between multiple installations of - GCC in the same directory. Hence we must check to see - if appending a directory separator actually makes a - valid directory name. */ - if (!IS_DIR_SEPARATOR (arg[len - 1]) - && is_directory (arg, false)) - { - char *tmp = XNEWVEC (char, len + 2); - strcpy (tmp, arg); - tmp[len] = DIR_SEPARATOR; - tmp[++len] = 0; - arg = tmp; - } - - add_prefix (&exec_prefixes, arg, NULL, - PREFIX_PRIORITY_B_OPT, 0, 0); - add_prefix (&startfile_prefixes, arg, NULL, - PREFIX_PRIORITY_B_OPT, 0, 0); - add_prefix (&include_prefixes, arg, NULL, - PREFIX_PRIORITY_B_OPT, 0, 0); - } - validated = true; - break; - - case OPT_x: - spec_lang = arg; - if (!strcmp (spec_lang, "none")) - /* Suppress the warning if -xnone comes after the last input - file, because alternate command interfaces like g++ might - find it useful to place -xnone after each input file. */ - spec_lang = 0; - else - last_language_n_infiles = n_infiles; - do_save = false; - break; - - case OPT_o: - have_o = 1; -#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) - arg = convert_filename (arg, ! have_c, 0); -#endif - /* Save the output name in case -save-temps=obj was used. */ - save_temps_prefix = xstrdup (arg); - /* On some systems, ld cannot handle "-o" without a space. So - split the option from its argument. */ - save_switch ("-o", 1, &arg, validated, true); - return true; - - case OPT_static_libgcc: - case OPT_shared_libgcc: - case OPT_static_libgfortran: - case OPT_static_libstdc__: - /* These are always valid, since gcc.c itself understands the - first two, gfortranspec.c understands -static-libgfortran and - g++spec.c understands -static-libstdc++ */ - validated = true; - break; - - default: - /* Various driver options need no special processing at this - point, having been handled in a prescan above or being - handled by specs. */ - break; - } - - if (do_save) - save_switch (decoded->canonical_option[0], - decoded->canonical_option_num_elements - 1, - &decoded->canonical_option[1], validated, true); - return true; -} - -/* Put the driver's standard set of option handlers in *HANDLERS. */ - -static void -set_option_handlers (struct cl_option_handlers *handlers) -{ - handlers->unknown_option_callback = driver_unknown_option_callback; - handlers->wrong_lang_callback = driver_wrong_lang_callback; - handlers->num_handlers = 3; - handlers->handlers[0].handler = driver_handle_option; - handlers->handlers[0].mask = CL_DRIVER; - handlers->handlers[1].handler = common_handle_option; - handlers->handlers[1].mask = CL_COMMON; - handlers->handlers[2].handler = target_handle_option; - handlers->handlers[2].mask = CL_TARGET; -} - -/* Create the vector `switches' and its contents. - Store its length in `n_switches'. */ - -static void -process_command (unsigned int decoded_options_count, - struct cl_decoded_option *decoded_options) -{ - const char *temp; - char *temp1; - char *tooldir_prefix, *tooldir_prefix2; - char *(*get_relative_prefix) (const char *, const char *, - const char *) = NULL; - struct cl_option_handlers handlers; - unsigned int j; - - gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX"); - - n_switches = 0; - n_infiles = 0; - added_libraries = 0; - - /* Figure compiler version from version string. */ - - compiler_version = temp1 = xstrdup (version_string); - - for (; *temp1; ++temp1) - { - if (*temp1 == ' ') - { - *temp1 = '\0'; - break; - } - } - - /* Handle any -no-canonical-prefixes flag early, to assign the function - that builds relative prefixes. This function creates default search - paths that are needed later in normal option handling. */ - - for (j = 1; j < decoded_options_count; j++) - { - if (decoded_options[j].opt_index == OPT_no_canonical_prefixes) - { - get_relative_prefix = make_relative_prefix_ignore_links; - break; - } - } - if (! get_relative_prefix) - get_relative_prefix = make_relative_prefix; - - /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, - see if we can create it from the pathname specified in - decoded_options[0].arg. */ - - gcc_libexec_prefix = standard_libexec_prefix; -#ifndef VMS - /* FIXME: make_relative_prefix doesn't yet work for VMS. */ - if (!gcc_exec_prefix) - { - gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg, - standard_bindir_prefix, - standard_exec_prefix); - gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg, - standard_bindir_prefix, - standard_libexec_prefix); - if (gcc_exec_prefix) - xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); - } - else - { - /* make_relative_prefix requires a program name, but - GCC_EXEC_PREFIX is typically a directory name with a trailing - / (which is ignored by make_relative_prefix), so append a - program name. */ - char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); - gcc_libexec_prefix = get_relative_prefix (tmp_prefix, - standard_exec_prefix, - standard_libexec_prefix); - - /* The path is unrelocated, so fallback to the original setting. */ - if (!gcc_libexec_prefix) - gcc_libexec_prefix = standard_libexec_prefix; - - free (tmp_prefix); - } -#else -#endif - /* From this point onward, gcc_exec_prefix is non-null if the toolchain - is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX - or an automatically created GCC_EXEC_PREFIX from - decoded_options[0].arg. */ - - /* Do language-specific adjustment/addition of flags. */ - lang_specific_driver (&decoded_options, &decoded_options_count, - &added_libraries); - - if (gcc_exec_prefix) - { - int len = strlen (gcc_exec_prefix); - - if (len > (int) sizeof ("/lib/gcc/") - 1 - && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) - { - temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; - if (IS_DIR_SEPARATOR (*temp) - && filename_ncmp (temp + 1, "lib", 3) == 0 - && IS_DIR_SEPARATOR (temp[4]) - && filename_ncmp (temp + 5, "gcc", 3) == 0) - len -= sizeof ("/lib/gcc/") - 1; - } - - set_std_prefix (gcc_exec_prefix, len); - add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", - PREFIX_PRIORITY_LAST, 0, 0); - add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", - PREFIX_PRIORITY_LAST, 0, 0); - } - - /* COMPILER_PATH and LIBRARY_PATH have values - that are lists of directory names with colons. */ - - temp = getenv ("COMPILER_PATH"); - if (temp) - { - const char *startp, *endp; - char *nstore = (char *) alloca (strlen (temp) + 3); - - startp = endp = temp; - while (1) - { - if (*endp == PATH_SEPARATOR || *endp == 0) - { - strncpy (nstore, startp, endp - startp); - if (endp == startp) - strcpy (nstore, concat (".", dir_separator_str, NULL)); - else if (!IS_DIR_SEPARATOR (endp[-1])) - { - nstore[endp - startp] = DIR_SEPARATOR; - nstore[endp - startp + 1] = 0; - } - else - nstore[endp - startp] = 0; - add_prefix (&exec_prefixes, nstore, 0, - PREFIX_PRIORITY_LAST, 0, 0); - add_prefix (&include_prefixes, nstore, 0, - PREFIX_PRIORITY_LAST, 0, 0); - if (*endp == 0) - break; - endp = startp = endp + 1; - } - else - endp++; - } - } - - temp = getenv (LIBRARY_PATH_ENV); - if (temp && *cross_compile == '0') - { - const char *startp, *endp; - char *nstore = (char *) alloca (strlen (temp) + 3); - - startp = endp = temp; - while (1) - { - if (*endp == PATH_SEPARATOR || *endp == 0) - { - strncpy (nstore, startp, endp - startp); - if (endp == startp) - strcpy (nstore, concat (".", dir_separator_str, NULL)); - else if (!IS_DIR_SEPARATOR (endp[-1])) - { - nstore[endp - startp] = DIR_SEPARATOR; - nstore[endp - startp + 1] = 0; - } - else - nstore[endp - startp] = 0; - add_prefix (&startfile_prefixes, nstore, NULL, - PREFIX_PRIORITY_LAST, 0, 1); - if (*endp == 0) - break; - endp = startp = endp + 1; - } - else - endp++; - } - } - - /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ - temp = getenv ("LPATH"); - if (temp && *cross_compile == '0') - { - const char *startp, *endp; - char *nstore = (char *) alloca (strlen (temp) + 3); - - startp = endp = temp; - while (1) - { - if (*endp == PATH_SEPARATOR || *endp == 0) - { - strncpy (nstore, startp, endp - startp); - if (endp == startp) - strcpy (nstore, concat (".", dir_separator_str, NULL)); - else if (!IS_DIR_SEPARATOR (endp[-1])) - { - nstore[endp - startp] = DIR_SEPARATOR; - nstore[endp - startp + 1] = 0; - } - else - nstore[endp - startp] = 0; - add_prefix (&startfile_prefixes, nstore, NULL, - PREFIX_PRIORITY_LAST, 0, 1); - if (*endp == 0) - break; - endp = startp = endp + 1; - } - else - endp++; - } - } - - /* Process the options and store input files and switches in their - vectors. */ - - last_language_n_infiles = -1; - - set_option_handlers (&handlers); - - for (j = 1; j < decoded_options_count; j++) - { - switch (decoded_options[j].opt_index) - { - case OPT_S: - case OPT_c: - case OPT_E: - have_c = 1; - break; - } - if (have_c) - break; - } - - for (j = 1; j < decoded_options_count; j++) - { - if (decoded_options[j].opt_index == OPT_SPECIAL_input_file) - { - const char *arg = decoded_options[j].arg; - const char *p = strrchr (arg, '@'); - char *fname; - long offset; - int consumed; -#ifdef HAVE_TARGET_OBJECT_SUFFIX - arg = convert_filename (arg, 0, access (arg, F_OK)); -#endif - /* For LTO static archive support we handle input file - specifications that are composed of a filename and - an offset like FNAME@OFFSET. */ - if (p - && p != arg - && sscanf (p, "@%li%n", &offset, &consumed) >= 1 - && strlen (p) == (unsigned int)consumed) - { - fname = (char *)xmalloc (p - arg + 1); - memcpy (fname, arg, p - arg); - fname[p - arg] = '\0'; - /* Only accept non-stdin and existing FNAME parts, otherwise - try with the full name. */ - if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0) - { - free (fname); - fname = xstrdup (arg); - } - } - else - fname = xstrdup (arg); - - if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0) - perror_with_name (fname); - else - add_infile (arg, spec_lang); - - free (fname); - continue; - } - - read_cmdline_option (&global_options, &global_options_set, - decoded_options + j, UNKNOWN_LOCATION, - CL_DRIVER, &handlers, global_dc); - } - - /* If -save-temps=obj and -o name, create the prefix to use for %b. - Otherwise just make -save-temps=obj the same as -save-temps=cwd. */ - if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL) - { - save_temps_length = strlen (save_temps_prefix); - temp = strrchr (lbasename (save_temps_prefix), '.'); - if (temp) - { - save_temps_length -= strlen (temp); - save_temps_prefix[save_temps_length] = '\0'; - } - - } - else if (save_temps_prefix != NULL) - { - free (save_temps_prefix); - save_temps_prefix = NULL; - } - - if (save_temps_flag && use_pipes) - { - /* -save-temps overrides -pipe, so that temp files are produced */ - if (save_temps_flag) - warning (0, "-pipe ignored because -save-temps specified"); - use_pipes = 0; - } - - if (!compare_debug) - { - const char *gcd = getenv ("GCC_COMPARE_DEBUG"); - - if (gcd && gcd[0] == '-') - { - compare_debug = 2; - compare_debug_opt = gcd; - } - else if (gcd && *gcd && strcmp (gcd, "0")) - { - compare_debug = 3; - compare_debug_opt = "-gtoggle"; - } - } - else if (compare_debug < 0) - { - compare_debug = 0; - gcc_assert (!compare_debug_opt); - } - - /* Set up the search paths. We add directories that we expect to - contain GNU Toolchain components before directories specified by - the machine description so that we will find GNU components (like - the GNU assembler) before those of the host system. */ - - /* If we don't know where the toolchain has been installed, use the - configured-in locations. */ - if (!gcc_exec_prefix) - { -#ifndef OS2 - add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", - PREFIX_PRIORITY_LAST, 1, 0); - add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", - PREFIX_PRIORITY_LAST, 2, 0); - add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", - PREFIX_PRIORITY_LAST, 2, 0); -#endif - add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", - PREFIX_PRIORITY_LAST, 1, 0); - } - - gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix)); - tooldir_prefix2 = concat (tooldir_base_prefix, spec_machine, - dir_separator_str, NULL); - - /* Look for tools relative to the location from which the driver is - running, or, if that is not available, the configured prefix. */ - tooldir_prefix - = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, - spec_machine, dir_separator_str, - spec_version, dir_separator_str, tooldir_prefix2, NULL); - free (tooldir_prefix2); - - add_prefix (&exec_prefixes, - concat (tooldir_prefix, "bin", dir_separator_str, NULL), - "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); - add_prefix (&startfile_prefixes, - concat (tooldir_prefix, "lib", dir_separator_str, NULL), - "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); - free (tooldir_prefix); - -#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) - /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, - then consider it to relocate with the rest of the GCC installation - if GCC_EXEC_PREFIX is set. - ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ - if (target_system_root && !target_system_root_changed && gcc_exec_prefix) - { - char *tmp_prefix = get_relative_prefix (decoded_options[0].arg, - standard_bindir_prefix, - target_system_root); - if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) - { - target_system_root = tmp_prefix; - target_system_root_changed = 1; - } - } -#endif - - /* More prefixes are enabled in main, after we read the specs file - and determine whether this is cross-compilation or not. */ - - if (n_infiles == last_language_n_infiles && spec_lang != 0) - warning (0, "%<-x %s%> after last input file has no effect", spec_lang); - - /* Synthesize -fcompare-debug flag from the GCC_COMPARE_DEBUG - environment variable. */ - if (compare_debug == 2 || compare_debug == 3) - { - const char *opt = concat ("-fcompare-debug=", compare_debug_opt, NULL); - save_switch (opt, 0, NULL, false, true); - compare_debug = 1; - } - - /* Ensure we only invoke each subprocess once. */ - if (print_subprocess_help || print_help_list || print_version) - { - n_infiles = 0; - - /* Create a dummy input file, so that we can pass - the help option on to the various sub-processes. */ - add_infile ("help-dummy", "c"); - } - - alloc_switch (); - switches[n_switches].part1 = 0; - alloc_infile (); - infiles[n_infiles].name = 0; -} - -/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS - and place that in the environment. */ - -static void -set_collect_gcc_options (void) -{ - int i; - int first_time; - - /* Build COLLECT_GCC_OPTIONS to have all of the options specified to - the compiler. */ - obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", - sizeof ("COLLECT_GCC_OPTIONS=") - 1); - - first_time = TRUE; - for (i = 0; (int) i < n_switches; i++) - { - const char *const *args; - const char *p, *q; - if (!first_time) - obstack_grow (&collect_obstack, " ", 1); - - first_time = FALSE; - - /* Ignore elided switches. */ - if ((switches[i].live_cond - & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC)) - == SWITCH_IGNORE) - continue; - - obstack_grow (&collect_obstack, "'-", 2); - q = switches[i].part1; - while ((p = strchr (q, '\''))) - { - obstack_grow (&collect_obstack, q, p - q); - obstack_grow (&collect_obstack, "'\\''", 4); - q = ++p; - } - obstack_grow (&collect_obstack, q, strlen (q)); - obstack_grow (&collect_obstack, "'", 1); - - for (args = switches[i].args; args && *args; args++) - { - obstack_grow (&collect_obstack, " '", 2); - q = *args; - while ((p = strchr (q, '\''))) - { - obstack_grow (&collect_obstack, q, p - q); - obstack_grow (&collect_obstack, "'\\''", 4); - q = ++p; - } - obstack_grow (&collect_obstack, q, strlen (q)); - obstack_grow (&collect_obstack, "'", 1); - } - } - obstack_grow (&collect_obstack, "\0", 1); - xputenv (XOBFINISH (&collect_obstack, char *)); -} - -/* Process a spec string, accumulating and running commands. */ - -/* These variables describe the input file name. - input_file_number is the index on outfiles of this file, - so that the output file name can be stored for later use by %o. - input_basename is the start of the part of the input file - sans all directory names, and basename_length is the number - of characters starting there excluding the suffix .c or whatever. */ - -static const char *gcc_input_filename; -static int input_file_number; -size_t input_filename_length; -static int basename_length; -static int suffixed_basename_length; -static const char *input_basename; -static const char *input_suffix; -#ifndef HOST_LACKS_INODE_NUMBERS -static struct stat input_stat; -#endif -static int input_stat_set; - -/* The compiler used to process the current input file. */ -static struct compiler *input_file_compiler; - -/* These are variables used within do_spec and do_spec_1. */ - -/* Nonzero if an arg has been started and not yet terminated - (with space, tab or newline). */ -static int arg_going; - -/* Nonzero means %d or %g has been seen; the next arg to be terminated - is a temporary file name. */ -static int delete_this_arg; - -/* Nonzero means %w has been seen; the next arg to be terminated - is the output file name of this compilation. */ -static int this_is_output_file; - -/* Nonzero means %s has been seen; the next arg to be terminated - is the name of a library file and we should try the standard - search dirs for it. */ -static int this_is_library_file; - -/* Nonzero means %T has been seen; the next arg to be terminated - is the name of a linker script and we should try all of the - standard search dirs for it. If it is found insert a --script - command line switch and then substitute the full path in place, - otherwise generate an error message. */ -static int this_is_linker_script; - -/* Nonzero means that the input of this command is coming from a pipe. */ -static int input_from_pipe; - -/* Nonnull means substitute this for any suffix when outputting a switches - arguments. */ -static const char *suffix_subst; - -/* If there is an argument being accumulated, terminate it and store it. */ - -static void -end_going_arg (void) -{ - if (arg_going) - { - const char *string; - - obstack_1grow (&obstack, 0); - string = XOBFINISH (&obstack, const char *); - if (this_is_library_file) - string = find_file (string); - if (this_is_linker_script) - { - char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true); - - if (full_script_path == NULL) - { - error ("unable to locate default linker script %qs in the library search paths", string); - /* Script was not found on search path. */ - return; - } - store_arg ("--script", false, false); - string = full_script_path; - } - store_arg (string, delete_this_arg, this_is_output_file); - if (this_is_output_file) - outfiles[input_file_number] = string; - arg_going = 0; - } -} - - -/* Parse the WRAPPER string which is a comma separated list of the command line - and insert them into the beginning of argbuf. */ - -static void -insert_wrapper (const char *wrapper) -{ - int n = 0; - int i; - char *buf = xstrdup (wrapper); - char *p = buf; - unsigned int old_length = argbuf.length (); - - do - { - n++; - while (*p == ',') - p++; - } - while ((p = strchr (p, ',')) != NULL); - - argbuf.safe_grow (old_length + n); - memmove (argbuf.address () + n, - argbuf.address (), - old_length * sizeof (const_char_p)); - - i = 0; - p = buf; - do - { - while (*p == ',') - { - *p = 0; - p++; - } - argbuf[i] = p; - i++; - } - while ((p = strchr (p, ',')) != NULL); - gcc_assert (i == n); -} - -/* Process the spec SPEC and run the commands specified therein. - Returns 0 if the spec is successfully processed; -1 if failed. */ - -int -do_spec (const char *spec) -{ - int value; - - value = do_spec_2 (spec); - - /* Force out any unfinished command. - If -pipe, this forces out the last command if it ended in `|'. */ - if (value == 0) - { - if (argbuf.length () > 0 - && !strcmp (argbuf.last (), "|")) - argbuf.pop (); - - set_collect_gcc_options (); - - if (argbuf.length () > 0) - value = execute (); - } - - return value; -} - -static int -do_spec_2 (const char *spec) -{ - int result; - - clear_args (); - arg_going = 0; - delete_this_arg = 0; - this_is_output_file = 0; - this_is_library_file = 0; - this_is_linker_script = 0; - input_from_pipe = 0; - suffix_subst = NULL; - - result = do_spec_1 (spec, 0, NULL); - - end_going_arg (); - - return result; -} - - -/* Process the given spec string and add any new options to the end - of the switches/n_switches array. */ - -static void -do_option_spec (const char *name, const char *spec) -{ - unsigned int i, value_count, value_len; - const char *p, *q, *value; - char *tmp_spec, *tmp_spec_p; - - if (configure_default_options[0].name == NULL) - return; - - for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) - if (strcmp (configure_default_options[i].name, name) == 0) - break; - if (i == ARRAY_SIZE (configure_default_options)) - return; - - value = configure_default_options[i].value; - value_len = strlen (value); - - /* Compute the size of the final spec. */ - value_count = 0; - p = spec; - while ((p = strstr (p, "%(VALUE)")) != NULL) - { - p ++; - value_count ++; - } - - /* Replace each %(VALUE) by the specified value. */ - tmp_spec = (char *) alloca (strlen (spec) + 1 - + value_count * (value_len - strlen ("%(VALUE)"))); - tmp_spec_p = tmp_spec; - q = spec; - while ((p = strstr (q, "%(VALUE)")) != NULL) - { - memcpy (tmp_spec_p, q, p - q); - tmp_spec_p = tmp_spec_p + (p - q); - memcpy (tmp_spec_p, value, value_len); - tmp_spec_p += value_len; - q = p + strlen ("%(VALUE)"); - } - strcpy (tmp_spec_p, q); - - do_self_spec (tmp_spec); -} - -/* Process the given spec string and add any new options to the end - of the switches/n_switches array. */ - -static void -do_self_spec (const char *spec) -{ - int i; - - do_spec_2 (spec); - do_spec_1 (" ", 0, NULL); - - /* Mark %<S switches processed by do_self_spec to be ignored permanently. - do_self_specs adds the replacements to switches array, so it shouldn't - be processed afterwards. */ - for (i = 0; i < n_switches; i++) - if ((switches[i].live_cond & SWITCH_IGNORE)) - switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY; - - if (argbuf.length () > 0) - { - const char **argbuf_copy; - struct cl_decoded_option *decoded_options; - struct cl_option_handlers handlers; - unsigned int decoded_options_count; - unsigned int j; - - /* Create a copy of argbuf with a dummy argv[0] entry for - decode_cmdline_options_to_array. */ - argbuf_copy = XNEWVEC (const char *, - argbuf.length () + 1); - argbuf_copy[0] = ""; - memcpy (argbuf_copy + 1, argbuf.address (), - argbuf.length () * sizeof (const char *)); - - decode_cmdline_options_to_array (argbuf.length () + 1, - argbuf_copy, - CL_DRIVER, &decoded_options, - &decoded_options_count); - free (argbuf_copy); - - set_option_handlers (&handlers); - - for (j = 1; j < decoded_options_count; j++) - { - switch (decoded_options[j].opt_index) - { - case OPT_SPECIAL_input_file: - /* Specs should only generate options, not input - files. */ - if (strcmp (decoded_options[j].arg, "-") != 0) - fatal_error ("switch %qs does not start with %<-%>", - decoded_options[j].arg); - else - fatal_error ("spec-generated switch is just %<-%>"); - break; - - case OPT_fcompare_debug_second: - case OPT_fcompare_debug: - case OPT_fcompare_debug_: - case OPT_o: - /* Avoid duplicate processing of some options from - compare-debug specs; just save them here. */ - save_switch (decoded_options[j].canonical_option[0], - (decoded_options[j].canonical_option_num_elements - - 1), - &decoded_options[j].canonical_option[1], false, true); - break; - - default: - read_cmdline_option (&global_options, &global_options_set, - decoded_options + j, UNKNOWN_LOCATION, - CL_DRIVER, &handlers, global_dc); - break; - } - } - - alloc_switch (); - switches[n_switches].part1 = 0; - } -} - -/* Callback for processing %D and %I specs. */ - -struct spec_path_info { - const char *option; - const char *append; - size_t append_len; - bool omit_relative; - bool separate_options; -}; - -static void * -spec_path (char *path, void *data) -{ - struct spec_path_info *info = (struct spec_path_info *) data; - size_t len = 0; - char save = 0; - - if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) - return NULL; - - if (info->append_len != 0) - { - len = strlen (path); - memcpy (path + len, info->append, info->append_len + 1); - } - - if (!is_directory (path, true)) - return NULL; - - do_spec_1 (info->option, 1, NULL); - if (info->separate_options) - do_spec_1 (" ", 0, NULL); - - if (info->append_len == 0) - { - len = strlen (path); - save = path[len - 1]; - if (IS_DIR_SEPARATOR (path[len - 1])) - path[len - 1] = '\0'; - } - - do_spec_1 (path, 1, NULL); - do_spec_1 (" ", 0, NULL); - - /* Must not damage the original path. */ - if (info->append_len == 0) - path[len - 1] = save; - - return NULL; -} - -/* Create a temporary FILE with the contents of ARGV. Add @FILE to the - argument list. */ - -static void -create_at_file (char **argv) -{ - char *temp_file = make_temp_file (""); - char *at_argument = concat ("@", temp_file, NULL); - FILE *f = fopen (temp_file, "w"); - int status; - - if (f == NULL) - fatal_error ("could not open temporary response file %s", - temp_file); - - status = writeargv (argv, f); - - if (status) - fatal_error ("could not write to temporary response file %s", - temp_file); - - status = fclose (f); - - if (EOF == status) - fatal_error ("could not close temporary response file %s", - temp_file); - - store_arg (at_argument, 0, 0); - - record_temp_file (temp_file, !save_temps_flag, !save_temps_flag); -} - -/* True if we should compile INFILE. */ - -static bool -compile_input_file_p (struct infile *infile) -{ - if ((!infile->language) || (infile->language[0] != '*')) - if (infile->incompiler == input_file_compiler) - return true; - return false; -} - -/* Process each member of VEC as a spec. */ - -static void -do_specs_vec (vec<char_p> vec) -{ - unsigned ix; - char *opt; - - FOR_EACH_VEC_ELT (vec, ix, opt) - { - do_spec_1 (opt, 1, NULL); - /* Make each accumulated option a separate argument. */ - do_spec_1 (" ", 0, NULL); - } -} - -/* Process the sub-spec SPEC as a portion of a larger spec. - This is like processing a whole spec except that we do - not initialize at the beginning and we do not supply a - newline by default at the end. - INSWITCH nonzero means don't process %-sequences in SPEC; - in this case, % is treated as an ordinary character. - This is used while substituting switches. - INSWITCH nonzero also causes SPC not to terminate an argument. - - Value is zero unless a line was finished - and the command on that line reported an error. */ - -static int -do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) -{ - const char *p = spec; - int c; - int i; - int value; - - /* If it's an empty string argument to a switch, keep it as is. */ - if (inswitch && !*p) - arg_going = 1; - - while ((c = *p++)) - /* If substituting a switch, treat all chars like letters. - Otherwise, NL, SPC, TAB and % are special. */ - switch (inswitch ? 'a' : c) - { - case '\n': - end_going_arg (); - - if (argbuf.length () > 0 - && !strcmp (argbuf.last (), "|")) - { - /* A `|' before the newline means use a pipe here, - but only if -pipe was specified. - Otherwise, execute now and don't pass the `|' as an arg. */ - if (use_pipes) - { - input_from_pipe = 1; - break; - } - else - argbuf.pop (); - } - - set_collect_gcc_options (); - - if (argbuf.length () > 0) - { - value = execute (); - if (value) - return value; - } - /* Reinitialize for a new command, and for a new argument. */ - clear_args (); - arg_going = 0; - delete_this_arg = 0; - this_is_output_file = 0; - this_is_library_file = 0; - this_is_linker_script = 0; - input_from_pipe = 0; - break; - - case '|': - end_going_arg (); - - /* Use pipe */ - obstack_1grow (&obstack, c); - arg_going = 1; - break; - - case '\t': - case ' ': - end_going_arg (); - - /* Reinitialize for a new argument. */ - delete_this_arg = 0; - this_is_output_file = 0; - this_is_library_file = 0; - this_is_linker_script = 0; - break; - - case '%': - switch (c = *p++) - { - case 0: - fatal_error ("spec %qs invalid", spec); - - case 'b': - if (save_temps_length) - obstack_grow (&obstack, save_temps_prefix, save_temps_length); - else - obstack_grow (&obstack, input_basename, basename_length); - if (compare_debug < 0) - obstack_grow (&obstack, ".gk", 3); - arg_going = 1; - break; - - case 'B': - if (save_temps_length) - obstack_grow (&obstack, save_temps_prefix, save_temps_length); - else - obstack_grow (&obstack, input_basename, suffixed_basename_length); - if (compare_debug < 0) - obstack_grow (&obstack, ".gk", 3); - arg_going = 1; - break; - - case 'd': - delete_this_arg = 2; - break; - - /* Dump out the directories specified with LIBRARY_PATH, - followed by the absolute directories - that we search for startfiles. */ - case 'D': - { - struct spec_path_info info; - - info.option = "-L"; - info.append_len = 0; -#ifdef RELATIVE_PREFIX_NOT_LINKDIR - /* Used on systems which record the specified -L dirs - and use them to search for dynamic linking. - Relative directories always come from -B, - and it is better not to use them for searching - at run time. In particular, stage1 loses. */ - info.omit_relative = true; -#else - info.omit_relative = false; -#endif - info.separate_options = false; - - for_each_path (&startfile_prefixes, true, 0, spec_path, &info); - } - break; - - case 'e': - /* %efoo means report an error with `foo' as error message - and don't execute any more commands for this file. */ - { - const char *q = p; - char *buf; - while (*p != 0 && *p != '\n') - p++; - buf = (char *) alloca (p - q + 1); - strncpy (buf, q, p - q); - buf[p - q] = 0; - error ("%s", _(buf)); - return -1; - } - break; - case 'n': - /* %nfoo means report a notice with `foo' on stderr. */ - { - const char *q = p; - char *buf; - while (*p != 0 && *p != '\n') - p++; - buf = (char *) alloca (p - q + 1); - strncpy (buf, q, p - q); - buf[p - q] = 0; - inform (0, "%s", _(buf)); - if (*p) - p++; - } - break; - - case 'j': - { - struct stat st; - - /* If save_temps_flag is off, and the HOST_BIT_BUCKET is - defined, and it is not a directory, and it is - writable, use it. Otherwise, treat this like any - other temporary file. */ - - if ((!save_temps_flag) - && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) - && (access (HOST_BIT_BUCKET, W_OK) == 0)) - { - obstack_grow (&obstack, HOST_BIT_BUCKET, - strlen (HOST_BIT_BUCKET)); - delete_this_arg = 0; - arg_going = 1; - break; - } - } - goto create_temp_file; - case '|': - if (use_pipes) - { - obstack_1grow (&obstack, '-'); - delete_this_arg = 0; - arg_going = 1; - - /* consume suffix */ - while (*p == '.' || ISALNUM ((unsigned char) *p)) - p++; - if (p[0] == '%' && p[1] == 'O') - p += 2; - - break; - } - goto create_temp_file; - case 'm': - if (use_pipes) - { - /* consume suffix */ - while (*p == '.' || ISALNUM ((unsigned char) *p)) - p++; - if (p[0] == '%' && p[1] == 'O') - p += 2; - - break; - } - goto create_temp_file; - case 'g': - case 'u': - case 'U': - create_temp_file: - { - struct temp_name *t; - int suffix_length; - const char *suffix = p; - char *saved_suffix = NULL; - - while (*p == '.' || ISALNUM ((unsigned char) *p)) - p++; - suffix_length = p - suffix; - if (p[0] == '%' && p[1] == 'O') - { - p += 2; - /* We don't support extra suffix characters after %O. */ - if (*p == '.' || ISALNUM ((unsigned char) *p)) - fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p); - if (suffix_length == 0) - suffix = TARGET_OBJECT_SUFFIX; - else - { - saved_suffix - = XNEWVEC (char, suffix_length - + strlen (TARGET_OBJECT_SUFFIX)); - strncpy (saved_suffix, suffix, suffix_length); - strcpy (saved_suffix + suffix_length, - TARGET_OBJECT_SUFFIX); - } - suffix_length += strlen (TARGET_OBJECT_SUFFIX); - } - - if (compare_debug < 0) - { - suffix = concat (".gk", suffix, NULL); - suffix_length += 3; - } - - /* If -save-temps=obj and -o were specified, use that for the - temp file. */ - if (save_temps_length) - { - char *tmp; - temp_filename_length - = save_temps_length + suffix_length + 1; - tmp = (char *) alloca (temp_filename_length); - memcpy (tmp, save_temps_prefix, save_temps_length); - memcpy (tmp + save_temps_length, suffix, suffix_length); - tmp[save_temps_length + suffix_length] = '\0'; - temp_filename = save_string (tmp, save_temps_length - + suffix_length); - obstack_grow (&obstack, temp_filename, - temp_filename_length); - arg_going = 1; - delete_this_arg = 0; - break; - } - - /* If the gcc_input_filename has the same suffix specified - for the %g, %u, or %U, and -save-temps is specified, - we could end up using that file as an intermediate - thus clobbering the user's source file (.e.g., - gcc -save-temps foo.s would clobber foo.s with the - output of cpp0). So check for this condition and - generate a temp file as the intermediate. */ - - if (save_temps_flag) - { - char *tmp; - temp_filename_length = basename_length + suffix_length + 1; - tmp = (char *) alloca (temp_filename_length); - memcpy (tmp, input_basename, basename_length); - memcpy (tmp + basename_length, suffix, suffix_length); - tmp[basename_length + suffix_length] = '\0'; - temp_filename = tmp; - - if (filename_cmp (temp_filename, gcc_input_filename) != 0) - { -#ifndef HOST_LACKS_INODE_NUMBERS - struct stat st_temp; - - /* Note, set_input() resets input_stat_set to 0. */ - if (input_stat_set == 0) - { - input_stat_set = stat (gcc_input_filename, - &input_stat); - if (input_stat_set >= 0) - input_stat_set = 1; - } - - /* If we have the stat for the gcc_input_filename - and we can do the stat for the temp_filename - then the they could still refer to the same - file if st_dev/st_ino's are the same. */ - if (input_stat_set != 1 - || stat (temp_filename, &st_temp) < 0 - || input_stat.st_dev != st_temp.st_dev - || input_stat.st_ino != st_temp.st_ino) -#else - /* Just compare canonical pathnames. */ - char* input_realname = lrealpath (gcc_input_filename); - char* temp_realname = lrealpath (temp_filename); - bool files_differ = filename_cmp (input_realname, temp_realname); - free (input_realname); - free (temp_realname); - if (files_differ) -#endif - { - temp_filename = save_string (temp_filename, - temp_filename_length + 1); - obstack_grow (&obstack, temp_filename, - temp_filename_length); - arg_going = 1; - delete_this_arg = 0; - break; - } - } - } - - /* See if we already have an association of %g/%u/%U and - suffix. */ - for (t = temp_names; t; t = t->next) - if (t->length == suffix_length - && strncmp (t->suffix, suffix, suffix_length) == 0 - && t->unique == (c == 'u' || c == 'U' || c == 'j')) - break; - - /* Make a new association if needed. %u and %j - require one. */ - if (t == 0 || c == 'u' || c == 'j') - { - if (t == 0) - { - t = XNEW (struct temp_name); - t->next = temp_names; - temp_names = t; - } - t->length = suffix_length; - if (saved_suffix) - { - t->suffix = saved_suffix; - saved_suffix = NULL; - } - else - t->suffix = save_string (suffix, suffix_length); - t->unique = (c == 'u' || c == 'U' || c == 'j'); - temp_filename = make_temp_file (t->suffix); - temp_filename_length = strlen (temp_filename); - t->filename = temp_filename; - t->filename_length = temp_filename_length; - } - - free (saved_suffix); - - obstack_grow (&obstack, t->filename, t->filename_length); - delete_this_arg = 1; - } - arg_going = 1; - break; - - case 'i': - if (combine_inputs) - { - if (at_file_supplied) - { - /* We are going to expand `%i' to `@FILE', where FILE - is a newly-created temporary filename. The filenames - that would usually be expanded in place of %o will be - written to the temporary file. */ - char **argv; - int n_files = 0; - int j; - - for (i = 0; i < n_infiles; i++) - if (compile_input_file_p (&infiles[i])) - n_files++; - - argv = (char **) alloca (sizeof (char *) * (n_files + 1)); - - /* Copy the strings over. */ - for (i = 0, j = 0; i < n_infiles; i++) - if (compile_input_file_p (&infiles[i])) - { - argv[j] = CONST_CAST (char *, infiles[i].name); - infiles[i].compiled = true; - j++; - } - argv[j] = NULL; - - create_at_file (argv); - } - else - for (i = 0; (int) i < n_infiles; i++) - if (compile_input_file_p (&infiles[i])) - { - store_arg (infiles[i].name, 0, 0); - infiles[i].compiled = true; - } - } - else - { - obstack_grow (&obstack, gcc_input_filename, - input_filename_length); - arg_going = 1; - } - break; - - case 'I': - { - struct spec_path_info info; - - if (multilib_dir) - { - do_spec_1 ("-imultilib", 1, NULL); - /* Make this a separate argument. */ - do_spec_1 (" ", 0, NULL); - do_spec_1 (multilib_dir, 1, NULL); - do_spec_1 (" ", 0, NULL); - } - - if (multiarch_dir) - { - do_spec_1 ("-imultiarch", 1, NULL); - /* Make this a separate argument. */ - do_spec_1 (" ", 0, NULL); - do_spec_1 (multiarch_dir, 1, NULL); - do_spec_1 (" ", 0, NULL); - } - - if (gcc_exec_prefix) - { - do_spec_1 ("-iprefix", 1, NULL); - /* Make this a separate argument. */ - do_spec_1 (" ", 0, NULL); - do_spec_1 (gcc_exec_prefix, 1, NULL); - do_spec_1 (" ", 0, NULL); - } - - if (target_system_root_changed || - (target_system_root && target_sysroot_hdrs_suffix)) - { - do_spec_1 ("-isysroot", 1, NULL); - /* Make this a separate argument. */ - do_spec_1 (" ", 0, NULL); - do_spec_1 (target_system_root, 1, NULL); - if (target_sysroot_hdrs_suffix) - do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); - do_spec_1 (" ", 0, NULL); - } - - info.option = "-isystem"; - info.append = "include"; - info.append_len = strlen (info.append); - info.omit_relative = false; - info.separate_options = true; - - for_each_path (&include_prefixes, false, info.append_len, - spec_path, &info); - - info.append = "include-fixed"; - if (*sysroot_hdrs_suffix_spec) - info.append = concat (info.append, dir_separator_str, - multilib_dir, NULL); - info.append_len = strlen (info.append); - for_each_path (&include_prefixes, false, info.append_len, - spec_path, &info); - } - break; - - case 'o': - { - int max = n_infiles; - max += lang_specific_extra_outfiles; - - if (HAVE_GNU_LD && at_file_supplied) - { - /* We are going to expand `%o' to `@FILE', where FILE - is a newly-created temporary filename. The filenames - that would usually be expanded in place of %o will be - written to the temporary file. */ - - char **argv; - int n_files, j; - - /* Convert OUTFILES into a form suitable for writeargv. */ - - /* Determine how many are non-NULL. */ - for (n_files = 0, i = 0; i < max; i++) - n_files += outfiles[i] != NULL; - - argv = (char **) alloca (sizeof (char *) * (n_files + 1)); - - /* Copy the strings over. */ - for (i = 0, j = 0; i < max; i++) - if (outfiles[i]) - { - argv[j] = CONST_CAST (char *, outfiles[i]); - j++; - } - argv[j] = NULL; - - create_at_file (argv); - } - else - for (i = 0; i < max; i++) - if (outfiles[i]) - store_arg (outfiles[i], 0, 0); - break; - } - - case 'O': - obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); - arg_going = 1; - break; - - case 's': - this_is_library_file = 1; - break; - - case 'T': - this_is_linker_script = 1; - break; - - case 'V': - outfiles[input_file_number] = NULL; - break; - - case 'w': - this_is_output_file = 1; - break; - - case 'W': - { - unsigned int cur_index = argbuf.length (); - /* Handle the {...} following the %W. */ - if (*p != '{') - fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p); - p = handle_braces (p + 1); - if (p == 0) - return -1; - end_going_arg (); - /* If any args were output, mark the last one for deletion - on failure. */ - if (argbuf.length () != cur_index) - record_temp_file (argbuf.last (), 0, 1); - break; - } - - /* %x{OPTION} records OPTION for %X to output. */ - case 'x': - { - const char *p1 = p; - char *string; - char *opt; - unsigned ix; - - /* Skip past the option value and make a copy. */ - if (*p != '{') - fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p); - while (*p++ != '}') - ; - string = save_string (p1 + 1, p - p1 - 2); - - /* See if we already recorded this option. */ - FOR_EACH_VEC_ELT (linker_options, ix, opt) - if (! strcmp (string, opt)) - { - free (string); - return 0; - } - - /* This option is new; add it. */ - add_linker_option (string, strlen (string)); - free (string); - } - break; - - /* Dump out the options accumulated previously using %x. */ - case 'X': - do_specs_vec (linker_options); - break; - - /* Dump out the options accumulated previously using -Wa,. */ - case 'Y': - do_specs_vec (assembler_options); - break; - - /* Dump out the options accumulated previously using -Wp,. */ - case 'Z': - do_specs_vec (preprocessor_options); - break; - - /* Here are digits and numbers that just process - a certain constant string as a spec. */ - - case '1': - value = do_spec_1 (cc1_spec, 0, NULL); - if (value != 0) - return value; - break; - - case '2': - value = do_spec_1 (cc1plus_spec, 0, NULL); - if (value != 0) - return value; - break; - - case 'a': - value = do_spec_1 (asm_spec, 0, NULL); - if (value != 0) - return value; - break; - - case 'A': - value = do_spec_1 (asm_final_spec, 0, NULL); - if (value != 0) - return value; - break; - - case 'C': - { - const char *const spec - = (input_file_compiler->cpp_spec - ? input_file_compiler->cpp_spec - : cpp_spec); - value = do_spec_1 (spec, 0, NULL); - if (value != 0) - return value; - } - break; - - case 'E': - value = do_spec_1 (endfile_spec, 0, NULL); - if (value != 0) - return value; - break; - - case 'l': - value = do_spec_1 (link_spec, 0, NULL); - if (value != 0) - return value; - break; - - case 'L': - value = do_spec_1 (lib_spec, 0, NULL); - if (value != 0) - return value; - break; - - case 'M': - if (multilib_os_dir == NULL) - obstack_1grow (&obstack, '.'); - else - obstack_grow (&obstack, multilib_os_dir, - strlen (multilib_os_dir)); - break; - - case 'G': - value = do_spec_1 (libgcc_spec, 0, NULL); - if (value != 0) - return value; - break; - - case 'R': - /* We assume there is a directory - separator at the end of this string. */ - if (target_system_root) - { - obstack_grow (&obstack, target_system_root, - strlen (target_system_root)); - if (target_sysroot_suffix) - obstack_grow (&obstack, target_sysroot_suffix, - strlen (target_sysroot_suffix)); - } - break; - - case 'S': - value = do_spec_1 (startfile_spec, 0, NULL); - if (value != 0) - return value; - break; - - /* Here we define characters other than letters and digits. */ - - case '{': - p = handle_braces (p); - if (p == 0) - return -1; - break; - - case ':': - p = handle_spec_function (p); - if (p == 0) - return -1; - break; - - case '%': - obstack_1grow (&obstack, '%'); - break; - - case '.': - { - unsigned len = 0; - - while (p[len] && p[len] != ' ' && p[len] != '%') - len++; - suffix_subst = save_string (p - 1, len + 1); - p += len; - } - break; - - /* Henceforth ignore the option(s) matching the pattern - after the %<. */ - case '<': - case '>': - { - unsigned len = 0; - int have_wildcard = 0; - int i; - int switch_option; - - if (c == '>') - switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC; - else - switch_option = SWITCH_IGNORE; - - while (p[len] && p[len] != ' ' && p[len] != '\t') - len++; - - if (p[len-1] == '*') - have_wildcard = 1; - - for (i = 0; i < n_switches; i++) - if (!strncmp (switches[i].part1, p, len - have_wildcard) - && (have_wildcard || switches[i].part1[len] == '\0')) - { - switches[i].live_cond |= switch_option; - /* User switch be validated from validate_all_switches. - when the definition is seen from the spec file. - If not defined anywhere, will be rejected. */ - if (switches[i].known) - switches[i].validated = true; - } - - p += len; - } - break; - - case '*': - if (soft_matched_part) - { - if (soft_matched_part[0]) - do_spec_1 (soft_matched_part, 1, NULL); - do_spec_1 (" ", 0, NULL); - } - else - /* Catch the case where a spec string contains something like - '%{foo:%*}'. i.e. there is no * in the pattern on the left - hand side of the :. */ - error ("spec failure: %<%%*%> has not been initialized by pattern match"); - break; - - /* Process a string found as the value of a spec given by name. - This feature allows individual machine descriptions - to add and use their own specs. */ - case '(': - { - const char *name = p; - struct spec_list *sl; - int len; - - /* The string after the S/P is the name of a spec that is to be - processed. */ - while (*p && *p != ')') - p++; - - /* See if it's in the list. */ - for (len = p - name, sl = specs; sl; sl = sl->next) - if (sl->name_len == len && !strncmp (sl->name, name, len)) - { - name = *(sl->ptr_spec); -#ifdef DEBUG_SPECS - fnotice (stderr, "Processing spec (%s), which is '%s'\n", - sl->name, name); -#endif - break; - } - - if (sl) - { - value = do_spec_1 (name, 0, NULL); - if (value != 0) - return value; - } - - /* Discard the closing paren. */ - if (*p) - p++; - } - break; - - default: - error ("spec failure: unrecognized spec option %qc", c); - break; - } - break; - - case '\\': - /* Backslash: treat next character as ordinary. */ - c = *p++; - - /* Fall through. */ - default: - /* Ordinary character: put it into the current argument. */ - obstack_1grow (&obstack, c); - arg_going = 1; - } - - /* End of string. If we are processing a spec function, we need to - end any pending argument. */ - if (processing_spec_function) - end_going_arg (); - - return 0; -} - -/* Look up a spec function. */ - -static const struct spec_function * -lookup_spec_function (const char *name) -{ - const struct spec_function *sf; - - for (sf = static_spec_functions; sf->name != NULL; sf++) - if (strcmp (sf->name, name) == 0) - return sf; - - return NULL; -} - -/* Evaluate a spec function. */ - -static const char * -eval_spec_function (const char *func, const char *args) -{ - const struct spec_function *sf; - const char *funcval; - - /* Saved spec processing context. */ - vec<const_char_p> save_argbuf; - - int save_arg_going; - int save_delete_this_arg; - int save_this_is_output_file; - int save_this_is_library_file; - int save_input_from_pipe; - int save_this_is_linker_script; - const char *save_suffix_subst; - - int save_growing_size; - void *save_growing_value; - - sf = lookup_spec_function (func); - if (sf == NULL) - fatal_error ("unknown spec function %qs", func); - - /* Push the spec processing context. */ - save_argbuf = argbuf; - - save_arg_going = arg_going; - save_delete_this_arg = delete_this_arg; - save_this_is_output_file = this_is_output_file; - save_this_is_library_file = this_is_library_file; - save_this_is_linker_script = this_is_linker_script; - save_input_from_pipe = input_from_pipe; - save_suffix_subst = suffix_subst; - - /* If we have some object growing now, finalize it so the args and function - eval proceed from a cleared context. This is needed to prevent the first - constructed arg from mistakenly including the growing value. We'll push - this value back on the obstack once the function evaluation is done, to - restore a consistent processing context for our caller. This is fine as - the address of growing objects isn't guaranteed to remain stable until - they are finalized, and we expect this situation to be rare enough for - the extra copy not to be an issue. */ - save_growing_size = obstack_object_size (&obstack); - if (save_growing_size > 0) - save_growing_value = obstack_finish (&obstack); - - /* Create a new spec processing context, and build the function - arguments. */ - - alloc_args (); - if (do_spec_2 (args) < 0) - fatal_error ("error in args to spec function %qs", func); - - /* argbuf_index is an index for the next argument to be inserted, and - so contains the count of the args already inserted. */ - - funcval = (*sf->func) (argbuf.length (), - argbuf.address ()); - - /* Pop the spec processing context. */ - argbuf.release (); - argbuf = save_argbuf; - - arg_going = save_arg_going; - delete_this_arg = save_delete_this_arg; - this_is_output_file = save_this_is_output_file; - this_is_library_file = save_this_is_library_file; - this_is_linker_script = save_this_is_linker_script; - input_from_pipe = save_input_from_pipe; - suffix_subst = save_suffix_subst; - - if (save_growing_size > 0) - obstack_grow (&obstack, save_growing_value, save_growing_size); - - return funcval; -} - -/* Handle a spec function call of the form: - - %:function(args) - - ARGS is processed as a spec in a separate context and split into an - argument vector in the normal fashion. The function returns a string - containing a spec which we then process in the caller's context, or - NULL if no processing is required. */ - -static const char * -handle_spec_function (const char *p) -{ - char *func, *args; - const char *endp, *funcval; - int count; - - processing_spec_function++; - - /* Get the function name. */ - for (endp = p; *endp != '\0'; endp++) - { - if (*endp == '(') /* ) */ - break; - /* Only allow [A-Za-z0-9], -, and _ in function names. */ - if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) - fatal_error ("malformed spec function name"); - } - if (*endp != '(') /* ) */ - fatal_error ("no arguments for spec function"); - func = save_string (p, endp - p); - p = ++endp; - - /* Get the arguments. */ - for (count = 0; *endp != '\0'; endp++) - { - /* ( */ - if (*endp == ')') - { - if (count == 0) - break; - count--; - } - else if (*endp == '(') /* ) */ - count++; - } - /* ( */ - if (*endp != ')') - fatal_error ("malformed spec function arguments"); - args = save_string (p, endp - p); - p = ++endp; - - /* p now points to just past the end of the spec function expression. */ - - funcval = eval_spec_function (func, args); - if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) - p = NULL; - - free (func); - free (args); - - processing_spec_function--; - - return p; -} - -/* Inline subroutine of handle_braces. Returns true if the current - input suffix matches the atom bracketed by ATOM and END_ATOM. */ -static inline bool -input_suffix_matches (const char *atom, const char *end_atom) -{ - return (input_suffix - && !strncmp (input_suffix, atom, end_atom - atom) - && input_suffix[end_atom - atom] == '\0'); -} - -/* Subroutine of handle_braces. Returns true if the current - input file's spec name matches the atom bracketed by ATOM and END_ATOM. */ -static bool -input_spec_matches (const char *atom, const char *end_atom) -{ - return (input_file_compiler - && input_file_compiler->suffix - && input_file_compiler->suffix[0] != '\0' - && !strncmp (input_file_compiler->suffix + 1, atom, - end_atom - atom) - && input_file_compiler->suffix[end_atom - atom + 1] == '\0'); -} - -/* Subroutine of handle_braces. Returns true if a switch - matching the atom bracketed by ATOM and END_ATOM appeared on the - command line. */ -static bool -switch_matches (const char *atom, const char *end_atom, int starred) -{ - int i; - int len = end_atom - atom; - int plen = starred ? len : -1; - - for (i = 0; i < n_switches; i++) - if (!strncmp (switches[i].part1, atom, len) - && (starred || switches[i].part1[len] == '\0') - && check_live_switch (i, plen)) - return true; - - /* Check if a switch with separated form matching the atom. - We check -D and -U switches. */ - else if (switches[i].args != 0) - { - if ((*switches[i].part1 == 'D' || *switches[i].part1 == 'U') - && *switches[i].part1 == atom[0]) - { - if (!strncmp (switches[i].args[0], &atom[1], len - 1) - && (starred || (switches[i].part1[1] == '\0' - && switches[i].args[0][len - 1] == '\0')) - && check_live_switch (i, (starred ? 1 : -1))) - return true; - } - } - - return false; -} - -/* Inline subroutine of handle_braces. Mark all of the switches which - match ATOM (extends to END_ATOM; STARRED indicates whether there - was a star after the atom) for later processing. */ -static inline void -mark_matching_switches (const char *atom, const char *end_atom, int starred) -{ - int i; - int len = end_atom - atom; - int plen = starred ? len : -1; - - for (i = 0; i < n_switches; i++) - if (!strncmp (switches[i].part1, atom, len) - && (starred || switches[i].part1[len] == '\0') - && check_live_switch (i, plen)) - switches[i].ordering = 1; -} - -/* Inline subroutine of handle_braces. Process all the currently - marked switches through give_switch, and clear the marks. */ -static inline void -process_marked_switches (void) -{ - int i; - - for (i = 0; i < n_switches; i++) - if (switches[i].ordering == 1) - { - switches[i].ordering = 0; - give_switch (i, 0); - } -} - -/* Handle a %{ ... } construct. P points just inside the leading {. - Returns a pointer one past the end of the brace block, or 0 - if we call do_spec_1 and that returns -1. */ - -static const char * -handle_braces (const char *p) -{ - const char *atom, *end_atom; - const char *d_atom = NULL, *d_end_atom = NULL; - const char *orig = p; - - bool a_is_suffix; - bool a_is_spectype; - bool a_is_starred; - bool a_is_negated; - bool a_matched; - - bool a_must_be_last = false; - bool ordered_set = false; - bool disjunct_set = false; - bool disj_matched = false; - bool disj_starred = true; - bool n_way_choice = false; - bool n_way_matched = false; - -#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) - - do - { - if (a_must_be_last) - goto invalid; - - /* Scan one "atom" (S in the description above of %{}, possibly - with '!', '.', '@', ',', or '*' modifiers). */ - a_matched = false; - a_is_suffix = false; - a_is_starred = false; - a_is_negated = false; - a_is_spectype = false; - - SKIP_WHITE(); - if (*p == '!') - p++, a_is_negated = true; - - SKIP_WHITE(); - if (*p == '.') - p++, a_is_suffix = true; - else if (*p == ',') - p++, a_is_spectype = true; - - atom = p; - while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '=' - || *p == ',' || *p == '.' || *p == '@') - p++; - end_atom = p; - - if (*p == '*') - p++, a_is_starred = 1; - - SKIP_WHITE(); - switch (*p) - { - case '&': case '}': - /* Substitute the switch(es) indicated by the current atom. */ - ordered_set = true; - if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix - || a_is_spectype || atom == end_atom) - goto invalid; - - mark_matching_switches (atom, end_atom, a_is_starred); - - if (*p == '}') - process_marked_switches (); - break; - - case '|': case ':': - /* Substitute some text if the current atom appears as a switch - or suffix. */ - disjunct_set = true; - if (ordered_set) - goto invalid; - - if (atom == end_atom) - { - if (!n_way_choice || disj_matched || *p == '|' - || a_is_negated || a_is_suffix || a_is_spectype - || a_is_starred) - goto invalid; - - /* An empty term may appear as the last choice of an - N-way choice set; it means "otherwise". */ - a_must_be_last = true; - disj_matched = !n_way_matched; - disj_starred = false; - } - else - { - if ((a_is_suffix || a_is_spectype) && a_is_starred) - goto invalid; - - if (!a_is_starred) - disj_starred = false; - - /* Don't bother testing this atom if we already have a - match. */ - if (!disj_matched && !n_way_matched) - { - if (a_is_suffix) - a_matched = input_suffix_matches (atom, end_atom); - else if (a_is_spectype) - a_matched = input_spec_matches (atom, end_atom); - else - a_matched = switch_matches (atom, end_atom, a_is_starred); - - if (a_matched != a_is_negated) - { - disj_matched = true; - d_atom = atom; - d_end_atom = end_atom; - } - } - } - - if (*p == ':') - { - /* Found the body, that is, the text to substitute if the - current disjunction matches. */ - p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, - disj_matched && !n_way_matched); - if (p == 0) - return 0; - - /* If we have an N-way choice, reset state for the next - disjunction. */ - if (*p == ';') - { - n_way_choice = true; - n_way_matched |= disj_matched; - disj_matched = false; - disj_starred = true; - d_atom = d_end_atom = NULL; - } - } - break; - - default: - goto invalid; - } - } - while (*p++ != '}'); - - return p; - - invalid: - fatal_error ("braced spec %qs is invalid at %qc", orig, *p); - -#undef SKIP_WHITE -} - -/* Subroutine of handle_braces. Scan and process a brace substitution body - (X in the description of %{} syntax). P points one past the colon; - ATOM and END_ATOM bracket the first atom which was found to be true - (present) in the current disjunction; STARRED indicates whether all - the atoms in the current disjunction were starred (for syntax validation); - MATCHED indicates whether the disjunction matched or not, and therefore - whether or not the body is to be processed through do_spec_1 or just - skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 - returns -1. */ - -static const char * -process_brace_body (const char *p, const char *atom, const char *end_atom, - int starred, int matched) -{ - const char *body, *end_body; - unsigned int nesting_level; - bool have_subst = false; - - /* Locate the closing } or ;, honoring nested braces. - Trim trailing whitespace. */ - body = p; - nesting_level = 1; - for (;;) - { - if (*p == '{') - nesting_level++; - else if (*p == '}') - { - if (!--nesting_level) - break; - } - else if (*p == ';' && nesting_level == 1) - break; - else if (*p == '%' && p[1] == '*' && nesting_level == 1) - have_subst = true; - else if (*p == '\0') - goto invalid; - p++; - } - - end_body = p; - while (end_body[-1] == ' ' || end_body[-1] == '\t') - end_body--; - - if (have_subst && !starred) - goto invalid; - - if (matched) - { - /* Copy the substitution body to permanent storage and execute it. - If have_subst is false, this is a simple matter of running the - body through do_spec_1... */ - char *string = save_string (body, end_body - body); - if (!have_subst) - { - if (do_spec_1 (string, 0, NULL) < 0) - return 0; - } - else - { - /* ... but if have_subst is true, we have to process the - body once for each matching switch, with %* set to the - variant part of the switch. */ - unsigned int hard_match_len = end_atom - atom; - int i; - - for (i = 0; i < n_switches; i++) - if (!strncmp (switches[i].part1, atom, hard_match_len) - && check_live_switch (i, hard_match_len)) - { - if (do_spec_1 (string, 0, - &switches[i].part1[hard_match_len]) < 0) - return 0; - /* Pass any arguments this switch has. */ - give_switch (i, 1); - suffix_subst = NULL; - } - } - } - - return p; - - invalid: - fatal_error ("braced spec body %qs is invalid", body); -} - -/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch - on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} - spec, or -1 if either exact match or %* is used. - - A -O switch is obsoleted by a later -O switch. A -f, -g, -m, or -W switch - whose value does not begin with "no-" is obsoleted by the same value - with the "no-", similarly for a switch with the "no-" prefix. */ - -static int -check_live_switch (int switchnum, int prefix_length) -{ - const char *name = switches[switchnum].part1; - int i; - - /* If we already processed this switch and determined if it was - live or not, return our past determination. */ - if (switches[switchnum].live_cond != 0) - return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0 - && (switches[switchnum].live_cond & SWITCH_FALSE) == 0 - && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY) - == 0); - - /* In the common case of {<at-most-one-letter>*}, a negating - switch would always match, so ignore that case. We will just - send the conflicting switches to the compiler phase. */ - if (prefix_length >= 0 && prefix_length <= 1) - return 1; - - /* Now search for duplicate in a manner that depends on the name. */ - switch (*name) - { - case 'O': - for (i = switchnum + 1; i < n_switches; i++) - if (switches[i].part1[0] == 'O') - { - switches[switchnum].validated = true; - switches[switchnum].live_cond = SWITCH_FALSE; - return 0; - } - break; - - case 'W': case 'f': case 'm': case 'g': - if (! strncmp (name + 1, "no-", 3)) - { - /* We have Xno-YYY, search for XYYY. */ - for (i = switchnum + 1; i < n_switches; i++) - if (switches[i].part1[0] == name[0] - && ! strcmp (&switches[i].part1[1], &name[4])) - { - /* --specs are validated with the validate_switches mechanism. */ - if (switches[switchnum].known) - switches[switchnum].validated = true; - switches[switchnum].live_cond = SWITCH_FALSE; - return 0; - } - } - else - { - /* We have XYYY, search for Xno-YYY. */ - for (i = switchnum + 1; i < n_switches; i++) - if (switches[i].part1[0] == name[0] - && switches[i].part1[1] == 'n' - && switches[i].part1[2] == 'o' - && switches[i].part1[3] == '-' - && !strcmp (&switches[i].part1[4], &name[1])) - { - /* --specs are validated with the validate_switches mechanism. */ - if (switches[switchnum].known) - switches[switchnum].validated = true; - switches[switchnum].live_cond = SWITCH_FALSE; - return 0; - } - } - break; - } - - /* Otherwise the switch is live. */ - switches[switchnum].live_cond |= SWITCH_LIVE; - return 1; -} - -/* Pass a switch to the current accumulating command - in the same form that we received it. - SWITCHNUM identifies the switch; it is an index into - the vector of switches gcc received, which is `switches'. - This cannot fail since it never finishes a command line. - - If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ - -static void -give_switch (int switchnum, int omit_first_word) -{ - if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0) - return; - - if (!omit_first_word) - { - do_spec_1 ("-", 0, NULL); - do_spec_1 (switches[switchnum].part1, 1, NULL); - } - - if (switches[switchnum].args != 0) - { - const char **p; - for (p = switches[switchnum].args; *p; p++) - { - const char *arg = *p; - - do_spec_1 (" ", 0, NULL); - if (suffix_subst) - { - unsigned length = strlen (arg); - int dot = 0; - - while (length-- && !IS_DIR_SEPARATOR (arg[length])) - if (arg[length] == '.') - { - (CONST_CAST(char *, arg))[length] = 0; - dot = 1; - break; - } - do_spec_1 (arg, 1, NULL); - if (dot) - (CONST_CAST(char *, arg))[length] = '.'; - do_spec_1 (suffix_subst, 1, NULL); - } - else - do_spec_1 (arg, 1, NULL); - } - } - - do_spec_1 (" ", 0, NULL); - switches[switchnum].validated = true; -} - -/* Search for a file named NAME trying various prefixes including the - user's -B prefix and some standard ones. - Return the absolute file name found. If nothing is found, return NAME. */ - -static const char * -find_file (const char *name) -{ - char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); - return newname ? newname : name; -} - -/* Determine whether a directory exists. If LINKER, return 0 for - certain fixed names not needed by the linker. */ - -static int -is_directory (const char *path1, bool linker) -{ - int len1; - char *path; - char *cp; - struct stat st; - - /* Ensure the string ends with "/.". The resulting path will be a - directory even if the given path is a symbolic link. */ - len1 = strlen (path1); - path = (char *) alloca (3 + len1); - memcpy (path, path1, len1); - cp = path + len1; - if (!IS_DIR_SEPARATOR (cp[-1])) - *cp++ = DIR_SEPARATOR; - *cp++ = '.'; - *cp = '\0'; - - /* Exclude directories that the linker is known to search. */ - if (linker - && IS_DIR_SEPARATOR (path[0]) - && ((cp - path == 6 - && filename_ncmp (path + 1, "lib", 3) == 0) - || (cp - path == 10 - && filename_ncmp (path + 1, "usr", 3) == 0 - && IS_DIR_SEPARATOR (path[4]) - && filename_ncmp (path + 5, "lib", 3) == 0))) - return 0; - - return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); -} - -/* Set up the various global variables to indicate that we're processing - the input file named FILENAME. */ - -void -set_input (const char *filename) -{ - const char *p; - - gcc_input_filename = filename; - input_filename_length = strlen (gcc_input_filename); - input_basename = lbasename (gcc_input_filename); - - /* Find a suffix starting with the last period, - and set basename_length to exclude that suffix. */ - basename_length = strlen (input_basename); - suffixed_basename_length = basename_length; - p = input_basename + basename_length; - while (p != input_basename && *p != '.') - --p; - if (*p == '.' && p != input_basename) - { - basename_length = p - input_basename; - input_suffix = p + 1; - } - else - input_suffix = ""; - - /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then - we will need to do a stat on the gcc_input_filename. The - INPUT_STAT_SET signals that the stat is needed. */ - input_stat_set = 0; -} - -/* On fatal signals, delete all the temporary files. */ - -static void -fatal_signal (int signum) -{ - signal (signum, SIG_DFL); - delete_failure_queue (); - delete_temp_files (); - /* Get the same signal again, this time not handled, - so its normal effect occurs. */ - kill (getpid (), signum); -} - -/* Compare the contents of the two files named CMPFILE[0] and - CMPFILE[1]. Return zero if they're identical, nonzero - otherwise. */ - -static int -compare_files (char *cmpfile[]) -{ - int ret = 0; - FILE *temp[2] = { NULL, NULL }; - int i; - -#if HAVE_MMAP_FILE - { - size_t length[2]; - void *map[2] = { NULL, NULL }; - - for (i = 0; i < 2; i++) - { - struct stat st; - - if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode)) - { - error ("%s: could not determine length of compare-debug file %s", - gcc_input_filename, cmpfile[i]); - ret = 1; - break; - } - - length[i] = st.st_size; - } - - if (!ret && length[0] != length[1]) - { - error ("%s: -fcompare-debug failure (length)", gcc_input_filename); - ret = 1; - } - - if (!ret) - for (i = 0; i < 2; i++) - { - int fd = open (cmpfile[i], O_RDONLY); - if (fd < 0) - { - error ("%s: could not open compare-debug file %s", - gcc_input_filename, cmpfile[i]); - ret = 1; - break; - } - - map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0); - close (fd); - - if (map[i] == (void *) MAP_FAILED) - { - ret = -1; - break; - } - } - - if (!ret) - { - if (memcmp (map[0], map[1], length[0]) != 0) - { - error ("%s: -fcompare-debug failure", gcc_input_filename); - ret = 1; - } - } - - for (i = 0; i < 2; i++) - if (map[i]) - munmap ((caddr_t) map[i], length[i]); - - if (ret >= 0) - return ret; - - ret = 0; - } -#endif - - for (i = 0; i < 2; i++) - { - temp[i] = fopen (cmpfile[i], "r"); - if (!temp[i]) - { - error ("%s: could not open compare-debug file %s", - gcc_input_filename, cmpfile[i]); - ret = 1; - break; - } - } - - if (!ret && temp[0] && temp[1]) - for (;;) - { - int c0, c1; - c0 = fgetc (temp[0]); - c1 = fgetc (temp[1]); - - if (c0 != c1) - { - error ("%s: -fcompare-debug failure", - gcc_input_filename); - ret = 1; - break; - } - - if (c0 == EOF) - break; - } - - for (i = 1; i >= 0; i--) - { - if (temp[i]) - fclose (temp[i]); - } - - return ret; -} - -extern int main (int, char **); - -int -main (int argc, char **argv) -{ - size_t i; - int value; - int linker_was_run = 0; - int lang_n_infiles = 0; - int num_linker_inputs = 0; - char *explicit_link_files; - char *specs_file; - char *lto_wrapper_file; - const char *p; - struct user_specs *uptr; - char **old_argv = argv; - struct cl_decoded_option *decoded_options; - unsigned int decoded_options_count; - - p = argv[0] + strlen (argv[0]); - while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) - --p; - progname = p; - - xmalloc_set_program_name (progname); - - expandargv (&argc, &argv); - - /* Determine if any expansions were made. */ - if (argv != old_argv) - at_file_supplied = true; - - /* Register the language-independent parameters. */ - global_init_params (); - finish_params (); - - init_options_struct (&global_options, &global_options_set); - - decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **, - argv), - CL_DRIVER, - &decoded_options, &decoded_options_count); - - /* Unlock the stdio streams. */ - unlock_std_streams (); - - gcc_init_libintl (); - - diagnostic_initialize (global_dc, 0); - -#ifdef GCC_DRIVER_HOST_INITIALIZATION - /* Perform host dependent initialization when needed. */ - GCC_DRIVER_HOST_INITIALIZATION; -#endif - - if (atexit (delete_temp_files) != 0) - fatal_error ("atexit failed"); - - if (signal (SIGINT, SIG_IGN) != SIG_IGN) - signal (SIGINT, fatal_signal); -#ifdef SIGHUP - if (signal (SIGHUP, SIG_IGN) != SIG_IGN) - signal (SIGHUP, fatal_signal); -#endif - if (signal (SIGTERM, SIG_IGN) != SIG_IGN) - signal (SIGTERM, fatal_signal); -#ifdef SIGPIPE - if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) - signal (SIGPIPE, fatal_signal); -#endif -#ifdef SIGCHLD - /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will - receive the signal. A different setting is inheritable */ - signal (SIGCHLD, SIG_DFL); -#endif - - /* Parsing and gimplification sometimes need quite large stack. - Increase stack size limits if possible. */ - stack_limit_increase (64 * 1024 * 1024); - - /* Allocate the argument vector. */ - alloc_args (); - - obstack_init (&obstack); - - /* Build multilib_select, et. al from the separate lines that make up each - multilib selection. */ - { - const char *const *q = multilib_raw; - int need_space; - - obstack_init (&multilib_obstack); - while ((p = *q++) != (char *) 0) - obstack_grow (&multilib_obstack, p, strlen (p)); - - obstack_1grow (&multilib_obstack, 0); - multilib_select = XOBFINISH (&multilib_obstack, const char *); - - q = multilib_matches_raw; - while ((p = *q++) != (char *) 0) - obstack_grow (&multilib_obstack, p, strlen (p)); - - obstack_1grow (&multilib_obstack, 0); - multilib_matches = XOBFINISH (&multilib_obstack, const char *); - - q = multilib_exclusions_raw; - while ((p = *q++) != (char *) 0) - obstack_grow (&multilib_obstack, p, strlen (p)); - - obstack_1grow (&multilib_obstack, 0); - multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); - - q = multilib_reuse_raw; - while ((p = *q++) != (char *) 0) - obstack_grow (&multilib_obstack, p, strlen (p)); - - obstack_1grow (&multilib_obstack, 0); - multilib_reuse = XOBFINISH (&multilib_obstack, const char *); - - need_space = FALSE; - for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) - { - if (need_space) - obstack_1grow (&multilib_obstack, ' '); - obstack_grow (&multilib_obstack, - multilib_defaults_raw[i], - strlen (multilib_defaults_raw[i])); - need_space = TRUE; - } - - obstack_1grow (&multilib_obstack, 0); - multilib_defaults = XOBFINISH (&multilib_obstack, const char *); - } - -#ifdef INIT_ENVIRONMENT - /* Set up any other necessary machine specific environment variables. */ - xputenv (INIT_ENVIRONMENT); -#endif - - /* Make a table of what switches there are (switches, n_switches). - Make a table of specified input files (infiles, n_infiles). - Decode switches that are handled locally. */ - - process_command (decoded_options_count, decoded_options); - - /* Initialize the vector of specs to just the default. - This means one element containing 0s, as a terminator. */ - - compilers = XNEWVAR (struct compiler, sizeof default_compilers); - memcpy (compilers, default_compilers, sizeof default_compilers); - n_compilers = n_default_compilers; - - /* Read specs from a file if there is one. */ - - machine_suffix = concat (spec_machine, dir_separator_str, - spec_version, dir_separator_str, NULL); - just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); - - specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); - /* Read the specs file unless it is a default one. */ - if (specs_file != 0 && strcmp (specs_file, "specs")) - read_specs (specs_file, true, false); - else - init_spec (); - - /* We need to check standard_exec_prefix/just_machine_suffix/specs - for any override of as, ld and libraries. */ - specs_file = (char *) alloca (strlen (standard_exec_prefix) - + strlen (just_machine_suffix) + sizeof ("specs")); - - strcpy (specs_file, standard_exec_prefix); - strcat (specs_file, just_machine_suffix); - strcat (specs_file, "specs"); - if (access (specs_file, R_OK) == 0) - read_specs (specs_file, true, false); - - /* Process any configure-time defaults specified for the command line - options, via OPTION_DEFAULT_SPECS. */ - for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) - do_option_spec (option_default_specs[i].name, - option_default_specs[i].spec); - - /* Process DRIVER_SELF_SPECS, adding any new options to the end - of the command line. */ - - for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) - do_self_spec (driver_self_specs[i]); - - /* If not cross-compiling, look for executables in the standard - places. */ - if (*cross_compile == '0') - { - if (*md_exec_prefix) - { - add_prefix (&exec_prefixes, md_exec_prefix, "GCC", - PREFIX_PRIORITY_LAST, 0, 0); - } - } - - /* Process sysroot_suffix_spec. */ - if (*sysroot_suffix_spec != 0 - && !no_sysroot_suffix - && do_spec_2 (sysroot_suffix_spec) == 0) - { - if (argbuf.length () > 1) - error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); - else if (argbuf.length () == 1) - target_sysroot_suffix = xstrdup (argbuf.last ()); - } - -#ifdef HAVE_LD_SYSROOT - /* Pass the --sysroot option to the linker, if it supports that. If - there is a sysroot_suffix_spec, it has already been processed by - this point, so target_system_root really is the system root we - should be using. */ - if (target_system_root) - { - obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); - obstack_grow0 (&obstack, link_spec, strlen (link_spec)); - set_spec ("link", XOBFINISH (&obstack, const char *), false); - } -#endif - - /* Process sysroot_hdrs_suffix_spec. */ - if (*sysroot_hdrs_suffix_spec != 0 - && !no_sysroot_suffix - && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) - { - if (argbuf.length () > 1) - error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); - else if (argbuf.length () == 1) - target_sysroot_hdrs_suffix = xstrdup (argbuf.last ()); - } - - /* Look for startfiles in the standard places. */ - if (*startfile_prefix_spec != 0 - && do_spec_2 (startfile_prefix_spec) == 0 - && do_spec_1 (" ", 0, NULL) == 0) - { - const char *arg; - int ndx; - FOR_EACH_VEC_ELT (argbuf, ndx, arg) - add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS", - PREFIX_PRIORITY_LAST, 0, 1); - } - /* We should eventually get rid of all these and stick to - startfile_prefix_spec exclusively. */ - else if (*cross_compile == '0' || target_system_root) - { - if (*md_startfile_prefix) - add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, - "GCC", PREFIX_PRIORITY_LAST, 0, 1); - - if (*md_startfile_prefix_1) - add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, - "GCC", PREFIX_PRIORITY_LAST, 0, 1); - - /* If standard_startfile_prefix is relative, base it on - standard_exec_prefix. This lets us move the installed tree - as a unit. If GCC_EXEC_PREFIX is defined, base - standard_startfile_prefix on that as well. - - If the prefix is relative, only search it for native compilers; - otherwise we will search a directory containing host libraries. */ - if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) - add_sysrooted_prefix (&startfile_prefixes, - standard_startfile_prefix, "BINUTILS", - PREFIX_PRIORITY_LAST, 0, 1); - else if (*cross_compile == '0') - { - add_prefix (&startfile_prefixes, - concat (gcc_exec_prefix - ? gcc_exec_prefix : standard_exec_prefix, - machine_suffix, - standard_startfile_prefix, NULL), - NULL, PREFIX_PRIORITY_LAST, 0, 1); - } - - /* Sysrooted prefixes are relocated because target_system_root is - also relocated by gcc_exec_prefix. */ - if (*standard_startfile_prefix_1) - add_sysrooted_prefix (&startfile_prefixes, - standard_startfile_prefix_1, "BINUTILS", - PREFIX_PRIORITY_LAST, 0, 1); - if (*standard_startfile_prefix_2) - add_sysrooted_prefix (&startfile_prefixes, - standard_startfile_prefix_2, "BINUTILS", - PREFIX_PRIORITY_LAST, 0, 1); - } - - /* Process any user specified specs in the order given on the command - line. */ - for (uptr = user_specs_head; uptr; uptr = uptr->next) - { - char *filename = find_a_file (&startfile_prefixes, uptr->filename, - R_OK, true); - read_specs (filename ? filename : uptr->filename, false, true); - } - - /* Process any user self specs. */ - { - struct spec_list *sl; - for (sl = specs; sl; sl = sl->next) - if (sl->name_len == sizeof "self_spec" - 1 - && !strcmp (sl->name, "self_spec")) - do_self_spec (*sl->ptr_spec); - } - - if (compare_debug) - { - enum save_temps save; - - if (!compare_debug_second) - { - n_switches_debug_check[1] = n_switches; - n_switches_alloc_debug_check[1] = n_switches_alloc; - switches_debug_check[1] = XDUPVEC (struct switchstr, switches, - n_switches_alloc); - - do_self_spec ("%:compare-debug-self-opt()"); - n_switches_debug_check[0] = n_switches; - n_switches_alloc_debug_check[0] = n_switches_alloc; - switches_debug_check[0] = switches; - - n_switches = n_switches_debug_check[1]; - n_switches_alloc = n_switches_alloc_debug_check[1]; - switches = switches_debug_check[1]; - } - - /* Avoid crash when computing %j in this early. */ - save = save_temps_flag; - save_temps_flag = SAVE_TEMPS_NONE; - - compare_debug = -compare_debug; - do_self_spec ("%:compare-debug-self-opt()"); - - save_temps_flag = save; - - if (!compare_debug_second) - { - n_switches_debug_check[1] = n_switches; - n_switches_alloc_debug_check[1] = n_switches_alloc; - switches_debug_check[1] = switches; - compare_debug = -compare_debug; - n_switches = n_switches_debug_check[0]; - n_switches_alloc = n_switches_debug_check[0]; - switches = switches_debug_check[0]; - } - } - - - /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ - if (gcc_exec_prefix) - gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, - spec_version, dir_separator_str, NULL); - - /* Now we have the specs. - Set the `valid' bits for switches that match anything in any spec. */ - - validate_all_switches (); - - /* Now that we have the switches and the specs, set - the subdirectory based on the options. */ - set_multilib_dir (); - - /* Set up to remember the pathname of gcc and any options - needed for collect. We use argv[0] instead of progname because - we need the complete pathname. */ - obstack_init (&collect_obstack); - obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); - obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); - xputenv (XOBFINISH (&collect_obstack, char *)); - - /* Set up to remember the pathname of the lto wrapper. */ - - if (have_c) - lto_wrapper_file = NULL; - else - lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", - X_OK, false); - if (lto_wrapper_file) - { - lto_wrapper_file = convert_white_space (lto_wrapper_file); - lto_wrapper_spec = lto_wrapper_file; - obstack_init (&collect_obstack); - obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=", - sizeof ("COLLECT_LTO_WRAPPER=") - 1); - obstack_grow (&collect_obstack, lto_wrapper_spec, - strlen (lto_wrapper_spec) + 1); - xputenv (XOBFINISH (&collect_obstack, char *)); - } - - /* Reject switches that no pass was interested in. */ - - for (i = 0; (int) i < n_switches; i++) - if (! switches[i].validated) - error ("unrecognized command line option %<-%s%>", switches[i].part1); - - /* Obey some of the options. */ - - if (print_search_dirs) - { - printf (_("install: %s%s\n"), - gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix, - gcc_exec_prefix ? "" : machine_suffix); - printf (_("programs: %s\n"), - build_search_list (&exec_prefixes, "", false, false)); - printf (_("libraries: %s\n"), - build_search_list (&startfile_prefixes, "", false, true)); - return (0); - } - - if (print_file_name) - { - printf ("%s\n", find_file (print_file_name)); - return (0); - } - - if (print_prog_name) - { - char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); - printf ("%s\n", (newname ? newname : print_prog_name)); - return (0); - } - - if (print_multi_lib) - { - print_multilib_info (); - return (0); - } - - if (print_multi_directory) - { - if (multilib_dir == NULL) - printf (".\n"); - else - printf ("%s\n", multilib_dir); - return (0); - } - - if (print_multiarch) - { - if (multiarch_dir == NULL) - printf ("\n"); - else - printf ("%s\n", multiarch_dir); - return (0); - } - - if (print_sysroot) - { - if (target_system_root) - { - if (target_sysroot_suffix) - printf ("%s%s\n", target_system_root, target_sysroot_suffix); - else - printf ("%s\n", target_system_root); - } - return (0); - } - - if (print_multi_os_directory) - { - if (multilib_os_dir == NULL) - printf (".\n"); - else - printf ("%s\n", multilib_os_dir); - return (0); - } - - if (print_sysroot_headers_suffix) - { - if (*sysroot_hdrs_suffix_spec) - { - printf("%s\n", (target_sysroot_hdrs_suffix - ? target_sysroot_hdrs_suffix - : "")); - return (0); - } - else - /* The error status indicates that only one set of fixed - headers should be built. */ - fatal_error ("not configured with sysroot headers suffix"); - } - - if (print_help_list) - { - display_help (); - - if (! verbose_flag) - { - printf (_("\nFor bug reporting instructions, please see:\n")); - printf ("%s.\n", bug_report_url); - - return (0); - } - - /* We do not exit here. Instead we have created a fake input file - called 'help-dummy' which needs to be compiled, and we pass this - on the various sub-processes, along with the --help switch. - Ensure their output appears after ours. */ - fputc ('\n', stdout); - fflush (stdout); - } - - if (print_version) - { - printf (_("%s %s%s\n"), progname, pkgversion_string, - version_string); - printf ("Copyright %s 2013 Free Software Foundation, Inc.\n", - _("(C)")); - fputs (_("This is free software; see the source for copying conditions. There is NO\n\ -warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), - stdout); - if (! verbose_flag) - return 0; - - /* We do not exit here. We use the same mechanism of --help to print - the version of the sub-processes. */ - fputc ('\n', stdout); - fflush (stdout); - } - - if (verbose_flag) - { - int n; - const char *thrmod; - - fnotice (stderr, "Target: %s\n", spec_machine); - fnotice (stderr, "Configured with: %s\n", configuration_arguments); - -#ifdef THREAD_MODEL_SPEC - /* We could have defined THREAD_MODEL_SPEC to "%*" by default, - but there's no point in doing all this processing just to get - thread_model back. */ - obstack_init (&obstack); - do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); - obstack_1grow (&obstack, '\0'); - thrmod = XOBFINISH (&obstack, const char *); -#else - thrmod = thread_model; -#endif - - fnotice (stderr, "Thread model: %s\n", thrmod); - - /* compiler_version is truncated at the first space when initialized - from version string, so truncate version_string at the first space - before comparing. */ - for (n = 0; version_string[n]; n++) - if (version_string[n] == ' ') - break; - - if (! strncmp (version_string, compiler_version, n) - && compiler_version[n] == 0) - fnotice (stderr, "gcc version %s %s\n", version_string, - pkgversion_string); - else - fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n", - version_string, pkgversion_string, compiler_version); - - if (n_infiles == 0) - return (0); - } - - if (n_infiles == added_libraries) - fatal_error ("no input files"); - - if (seen_error ()) - goto out; - - /* Make a place to record the compiler output file names - that correspond to the input files. */ - - i = n_infiles; - i += lang_specific_extra_outfiles; - outfiles = XCNEWVEC (const char *, i); - - /* Record which files were specified explicitly as link input. */ - - explicit_link_files = XCNEWVEC (char, n_infiles); - - combine_inputs = have_o || flag_wpa; - - for (i = 0; (int) i < n_infiles; i++) - { - const char *name = infiles[i].name; - struct compiler *compiler = lookup_compiler (name, - strlen (name), - infiles[i].language); - - if (compiler && !(compiler->combinable)) - combine_inputs = false; - - if (lang_n_infiles > 0 && compiler != input_file_compiler - && infiles[i].language && infiles[i].language[0] != '*') - infiles[i].incompiler = compiler; - else if (compiler) - { - lang_n_infiles++; - input_file_compiler = compiler; - infiles[i].incompiler = compiler; - } - else - { - /* Since there is no compiler for this input file, assume it is a - linker file. */ - explicit_link_files[i] = 1; - infiles[i].incompiler = NULL; - } - infiles[i].compiled = false; - infiles[i].preprocessed = false; - } - - if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) - fatal_error ("cannot specify -o with -c, -S or -E with multiple files"); - - for (i = 0; (int) i < n_infiles; i++) - { - int this_file_error = 0; - - /* Tell do_spec what to substitute for %i. */ - - input_file_number = i; - set_input (infiles[i].name); - - if (infiles[i].compiled) - continue; - - /* Use the same thing in %o, unless cp->spec says otherwise. */ - - outfiles[i] = gcc_input_filename; - - /* Figure out which compiler from the file's suffix. */ - - input_file_compiler - = lookup_compiler (infiles[i].name, input_filename_length, - infiles[i].language); - - if (input_file_compiler) - { - /* Ok, we found an applicable compiler. Run its spec. */ - - if (input_file_compiler->spec[0] == '#') - { - error ("%s: %s compiler not installed on this system", - gcc_input_filename, &input_file_compiler->spec[1]); - this_file_error = 1; - } - else - { - if (compare_debug) - { - free (debug_check_temp_file[0]); - debug_check_temp_file[0] = NULL; - - free (debug_check_temp_file[1]); - debug_check_temp_file[1] = NULL; - } - - value = do_spec (input_file_compiler->spec); - infiles[i].compiled = true; - if (value < 0) - this_file_error = 1; - else if (compare_debug && debug_check_temp_file[0]) - { - if (verbose_flag) - inform (0, "recompiling with -fcompare-debug"); - - compare_debug = -compare_debug; - n_switches = n_switches_debug_check[1]; - n_switches_alloc = n_switches_alloc_debug_check[1]; - switches = switches_debug_check[1]; - - value = do_spec (input_file_compiler->spec); - - compare_debug = -compare_debug; - n_switches = n_switches_debug_check[0]; - n_switches_alloc = n_switches_alloc_debug_check[0]; - switches = switches_debug_check[0]; - - if (value < 0) - { - error ("during -fcompare-debug recompilation"); - this_file_error = 1; - } - - gcc_assert (debug_check_temp_file[1] - && filename_cmp (debug_check_temp_file[0], - debug_check_temp_file[1])); - - if (verbose_flag) - inform (0, "comparing final insns dumps"); - - if (compare_files (debug_check_temp_file)) - this_file_error = 1; - } - - if (compare_debug) - { - free (debug_check_temp_file[0]); - debug_check_temp_file[0] = NULL; - - free (debug_check_temp_file[1]); - debug_check_temp_file[1] = NULL; - } - } - } - - /* If this file's name does not contain a recognized suffix, - record it as explicit linker input. */ - - else - explicit_link_files[i] = 1; - - /* Clear the delete-on-failure queue, deleting the files in it - if this compilation failed. */ - - if (this_file_error) - { - delete_failure_queue (); - errorcount++; - } - /* If this compilation succeeded, don't delete those files later. */ - clear_failure_queue (); - } - - /* Reset the input file name to the first compile/object file name, for use - with %b in LINK_SPEC. We use the first input file that we can find - a compiler to compile it instead of using infiles.language since for - languages other than C we use aliases that we then lookup later. */ - if (n_infiles > 0) - { - int i; - - for (i = 0; i < n_infiles ; i++) - if (infiles[i].incompiler - || (infiles[i].language && infiles[i].language[0] != '*')) - { - set_input (infiles[i].name); - break; - } - } - - if (!seen_error ()) - { - /* Make sure INPUT_FILE_NUMBER points to first available open - slot. */ - input_file_number = n_infiles; - if (lang_specific_pre_link ()) - errorcount++; - } - - /* Determine if there are any linker input files. */ - num_linker_inputs = 0; - for (i = 0; (int) i < n_infiles; i++) - if (explicit_link_files[i] || outfiles[i] != NULL) - num_linker_inputs++; - - /* Run ld to link all the compiler output files. */ - - if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2) - { - int tmp = execution_count; - - if (! have_c) - { -#if HAVE_LTO_PLUGIN > 0 -#if HAVE_LTO_PLUGIN == 2 - const char *fno_use_linker_plugin = "fno-use-linker-plugin"; -#else - const char *fuse_linker_plugin = "fuse-linker-plugin"; -#endif -#endif - - /* We'll use ld if we can't find collect2. */ - if (! strcmp (linker_name_spec, "collect2")) - { - char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); - if (s == NULL) - linker_name_spec = "ld"; - } - -#if HAVE_LTO_PLUGIN > 0 -#if HAVE_LTO_PLUGIN == 2 - if (!switch_matches (fno_use_linker_plugin, - fno_use_linker_plugin - + strlen (fno_use_linker_plugin), 0)) -#else - if (switch_matches (fuse_linker_plugin, - fuse_linker_plugin - + strlen (fuse_linker_plugin), 0)) -#endif - { - char *temp_spec = find_a_file (&exec_prefixes, - LTOPLUGINSONAME, R_OK, - false); - if (!temp_spec) - fatal_error ("-fuse-linker-plugin, but %s not found", - LTOPLUGINSONAME); - linker_plugin_file_spec = convert_white_space (temp_spec); - } -#endif - lto_gcc_spec = argv[0]; - } - - /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables - for collect. */ - putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); - putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); - - if (print_subprocess_help == 1) - { - printf (_("\nLinker options\n==============\n\n")); - printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\"" - " to the linker.\n\n")); - fflush (stdout); - } - value = do_spec (link_command_spec); - if (value < 0) - errorcount = 1; - linker_was_run = (tmp != execution_count); - } - - /* If options said don't run linker, - complain about input files to be given to the linker. */ - - if (! linker_was_run && !seen_error ()) - for (i = 0; (int) i < n_infiles; i++) - if (explicit_link_files[i] - && !(infiles[i].language && infiles[i].language[0] == '*')) - warning (0, "%s: linker input file unused because linking not done", - outfiles[i]); - - /* Delete some or all of the temporary files we made. */ - - if (seen_error ()) - delete_failure_queue (); - delete_temp_files (); - - if (print_help_list) - { - printf (("\nFor bug reporting instructions, please see:\n")); - printf ("%s\n", bug_report_url); - } - - out: - return (signal_count != 0 ? 2 - : seen_error () ? (pass_exit_codes ? greatest_status : 1) - : 0); -} - -/* Find the proper compilation spec for the file name NAME, - whose length is LENGTH. LANGUAGE is the specified language, - or 0 if this file is to be passed to the linker. */ - -static struct compiler * -lookup_compiler (const char *name, size_t length, const char *language) -{ - struct compiler *cp; - - /* If this was specified by the user to be a linker input, indicate that. */ - if (language != 0 && language[0] == '*') - return 0; - - /* Otherwise, look for the language, if one is spec'd. */ - if (language != 0) - { - for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) - if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) - return cp; - - error ("language %s not recognized", language); - return 0; - } - - /* Look for a suffix. */ - for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) - { - if (/* The suffix `-' matches only the file name `-'. */ - (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) - || (strlen (cp->suffix) < length - /* See if the suffix matches the end of NAME. */ - && !strcmp (cp->suffix, - name + length - strlen (cp->suffix)) - )) - break; - } - -#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) - /* Look again, but case-insensitively this time. */ - if (cp < compilers) - for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) - { - if (/* The suffix `-' matches only the file name `-'. */ - (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) - || (strlen (cp->suffix) < length - /* See if the suffix matches the end of NAME. */ - && ((!strcmp (cp->suffix, - name + length - strlen (cp->suffix)) - || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) - && !strcasecmp (cp->suffix, - name + length - strlen (cp->suffix))) - )) - break; - } -#endif - - if (cp >= compilers) - { - if (cp->spec[0] != '@') - /* A non-alias entry: return it. */ - return cp; - - /* An alias entry maps a suffix to a language. - Search for the language; pass 0 for NAME and LENGTH - to avoid infinite recursion if language not found. */ - return lookup_compiler (NULL, 0, cp->spec + 1); - } - return 0; -} - -static char * -save_string (const char *s, int len) -{ - char *result = XNEWVEC (char, len + 1); - - memcpy (result, s, len); - result[len] = 0; - return result; -} - -void -pfatal_with_name (const char *name) -{ - perror_with_name (name); - delete_temp_files (); - exit (1); -} - -static void -perror_with_name (const char *name) -{ - error ("%s: %m", name); -} - -static inline void -validate_switches_from_spec (const char *spec, bool user) -{ - const char *p = spec; - char c; - while ((c = *p++)) - if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) - /* We have a switch spec. */ - p = validate_switches (p + 1, user); -} - -static void -validate_all_switches (void) -{ - struct compiler *comp; - struct spec_list *spec; - - for (comp = compilers; comp->spec; comp++) - validate_switches_from_spec (comp->spec, false); - - /* Look through the linked list of specs read from the specs file. */ - for (spec = specs; spec; spec = spec->next) - validate_switches_from_spec (*spec->ptr_spec, spec->user_p); - - validate_switches_from_spec (link_command_spec, false); -} - -/* Look at the switch-name that comes after START - and mark as valid all supplied switches that match it. */ - -static const char * -validate_switches (const char *start, bool user_spec) -{ - const char *p = start; - const char *atom; - size_t len; - int i; - bool suffix = false; - bool starred = false; - -#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) - -next_member: - SKIP_WHITE (); - - if (*p == '!') - p++; - - SKIP_WHITE (); - if (*p == '.' || *p == ',') - suffix = true, p++; - - atom = p; - while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' - || *p == ',' || *p == '.' || *p == '@') - p++; - len = p - atom; - - if (*p == '*') - starred = true, p++; - - SKIP_WHITE (); - - if (!suffix) - { - /* Mark all matching switches as valid. */ - for (i = 0; i < n_switches; i++) - if (!strncmp (switches[i].part1, atom, len) - && (starred || switches[i].part1[len] == '\0') - && (switches[i].known || user_spec)) - switches[i].validated = true; - } - - if (*p) p++; - if (*p && (p[-1] == '|' || p[-1] == '&')) - goto next_member; - - if (*p && p[-1] == ':') - { - while (*p && *p != ';' && *p != '}') - { - if (*p == '%') - { - p++; - if (*p == '{' || *p == '<') - p = validate_switches (p+1, user_spec); - else if (p[0] == 'W' && p[1] == '{') - p = validate_switches (p+2, user_spec); - } - else - p++; - } - - if (*p) p++; - if (*p && p[-1] == ';') - goto next_member; - } - - return p; -#undef SKIP_WHITE -} - -struct mdswitchstr -{ - const char *str; - int len; -}; - -static struct mdswitchstr *mdswitches; -static int n_mdswitches; - -/* Check whether a particular argument was used. The first time we - canonicalize the switches to keep only the ones we care about. */ - -static int -used_arg (const char *p, int len) -{ - struct mswitchstr - { - const char *str; - const char *replace; - int len; - int rep_len; - }; - - static struct mswitchstr *mswitches; - static int n_mswitches; - int i, j; - - if (!mswitches) - { - struct mswitchstr *matches; - const char *q; - int cnt = 0; - - /* Break multilib_matches into the component strings of string - and replacement string. */ - for (q = multilib_matches; *q != '\0'; q++) - if (*q == ';') - cnt++; - - matches - = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); - i = 0; - q = multilib_matches; - while (*q != '\0') - { - matches[i].str = q; - while (*q != ' ') - { - if (*q == '\0') - { - invalid_matches: - fatal_error ("multilib spec %qs is invalid", - multilib_matches); - } - q++; - } - matches[i].len = q - matches[i].str; - - matches[i].replace = ++q; - while (*q != ';' && *q != '\0') - { - if (*q == ' ') - goto invalid_matches; - q++; - } - matches[i].rep_len = q - matches[i].replace; - i++; - if (*q == ';') - q++; - } - - /* Now build a list of the replacement string for switches that we care - about. Make sure we allocate at least one entry. This prevents - xmalloc from calling fatal, and prevents us from re-executing this - block of code. */ - mswitches - = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); - for (i = 0; i < n_switches; i++) - if ((switches[i].live_cond & SWITCH_IGNORE) == 0) - { - int xlen = strlen (switches[i].part1); - for (j = 0; j < cnt; j++) - if (xlen == matches[j].len - && ! strncmp (switches[i].part1, matches[j].str, xlen)) - { - mswitches[n_mswitches].str = matches[j].replace; - mswitches[n_mswitches].len = matches[j].rep_len; - mswitches[n_mswitches].replace = (char *) 0; - mswitches[n_mswitches].rep_len = 0; - n_mswitches++; - break; - } - } - - /* Add MULTILIB_DEFAULTS switches too, as long as they were not present - on the command line nor any options mutually incompatible with - them. */ - for (i = 0; i < n_mdswitches; i++) - { - const char *r; - - for (q = multilib_options; *q != '\0'; q++) - { - while (*q == ' ') - q++; - - r = q; - while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 - || strchr (" /", q[mdswitches[i].len]) == NULL) - { - while (*q != ' ' && *q != '/' && *q != '\0') - q++; - if (*q != '/') - break; - q++; - } - - if (*q != ' ' && *q != '\0') - { - while (*r != ' ' && *r != '\0') - { - q = r; - while (*q != ' ' && *q != '/' && *q != '\0') - q++; - - if (used_arg (r, q - r)) - break; - - if (*q != '/') - { - mswitches[n_mswitches].str = mdswitches[i].str; - mswitches[n_mswitches].len = mdswitches[i].len; - mswitches[n_mswitches].replace = (char *) 0; - mswitches[n_mswitches].rep_len = 0; - n_mswitches++; - break; - } - - r = q + 1; - } - break; - } - } - } - } - - for (i = 0; i < n_mswitches; i++) - if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) - return 1; - - return 0; -} - -static int -default_arg (const char *p, int len) -{ - int i; - - for (i = 0; i < n_mdswitches; i++) - if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) - return 1; - - return 0; -} - -/* Work out the subdirectory to use based on the options. The format of - multilib_select is a list of elements. Each element is a subdirectory - name followed by a list of options followed by a semicolon. The format - of multilib_exclusions is the same, but without the preceding - directory. First gcc will check the exclusions, if none of the options - beginning with an exclamation point are present, and all of the other - options are present, then we will ignore this completely. Passing - that, gcc will consider each multilib_select in turn using the same - rules for matching the options. If a match is found, that subdirectory - will be used. - A subdirectory name is optionally followed by a colon and the corresponding - multiarch name. */ - -static void -set_multilib_dir (void) -{ - const char *p; - unsigned int this_path_len; - const char *this_path, *this_arg; - const char *start, *end; - int not_arg; - int ok, ndfltok, first; - - n_mdswitches = 0; - start = multilib_defaults; - while (*start == ' ' || *start == '\t') - start++; - while (*start != '\0') - { - n_mdswitches++; - while (*start != ' ' && *start != '\t' && *start != '\0') - start++; - while (*start == ' ' || *start == '\t') - start++; - } - - if (n_mdswitches) - { - int i = 0; - - mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); - for (start = multilib_defaults; *start != '\0'; start = end + 1) - { - while (*start == ' ' || *start == '\t') - start++; - - if (*start == '\0') - break; - - for (end = start + 1; - *end != ' ' && *end != '\t' && *end != '\0'; end++) - ; - - obstack_grow (&multilib_obstack, start, end - start); - obstack_1grow (&multilib_obstack, 0); - mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); - mdswitches[i++].len = end - start; - - if (*end == '\0') - break; - } - } - - p = multilib_exclusions; - while (*p != '\0') - { - /* Ignore newlines. */ - if (*p == '\n') - { - ++p; - continue; - } - - /* Check the arguments. */ - ok = 1; - while (*p != ';') - { - if (*p == '\0') - { - invalid_exclusions: - fatal_error ("multilib exclusions %qs is invalid", - multilib_exclusions); - } - - if (! ok) - { - ++p; - continue; - } - - this_arg = p; - while (*p != ' ' && *p != ';') - { - if (*p == '\0') - goto invalid_exclusions; - ++p; - } - - if (*this_arg != '!') - not_arg = 0; - else - { - not_arg = 1; - ++this_arg; - } - - ok = used_arg (this_arg, p - this_arg); - if (not_arg) - ok = ! ok; - - if (*p == ' ') - ++p; - } - - if (ok) - return; - - ++p; - } - - first = 1; - p = multilib_select; - - /* Append multilib reuse rules if any. With those rules, we can reuse - one multilib for certain different options sets. */ - if (strlen (multilib_reuse) > 0) - p = concat (p, multilib_reuse, NULL); - - while (*p != '\0') - { - /* Ignore newlines. */ - if (*p == '\n') - { - ++p; - continue; - } - - /* Get the initial path. */ - this_path = p; - while (*p != ' ') - { - if (*p == '\0') - { - invalid_select: - fatal_error ("multilib select %qs %qs is invalid", - multilib_select, multilib_reuse); - } - ++p; - } - this_path_len = p - this_path; - - /* Check the arguments. */ - ok = 1; - ndfltok = 1; - ++p; - while (*p != ';') - { - if (*p == '\0') - goto invalid_select; - - if (! ok) - { - ++p; - continue; - } - - this_arg = p; - while (*p != ' ' && *p != ';') - { - if (*p == '\0') - goto invalid_select; - ++p; - } - - if (*this_arg != '!') - not_arg = 0; - else - { - not_arg = 1; - ++this_arg; - } - - /* If this is a default argument, we can just ignore it. - This is true even if this_arg begins with '!'. Beginning - with '!' does not mean that this argument is necessarily - inappropriate for this library: it merely means that - there is a more specific library which uses this - argument. If this argument is a default, we need not - consider that more specific library. */ - ok = used_arg (this_arg, p - this_arg); - if (not_arg) - ok = ! ok; - - if (! ok) - ndfltok = 0; - - if (default_arg (this_arg, p - this_arg)) - ok = 1; - - if (*p == ' ') - ++p; - } - - if (ok && first) - { - if (this_path_len != 1 - || this_path[0] != '.') - { - char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); - char *q; - - strncpy (new_multilib_dir, this_path, this_path_len); - new_multilib_dir[this_path_len] = '\0'; - q = strchr (new_multilib_dir, ':'); - if (q != NULL) - *q = '\0'; - multilib_dir = new_multilib_dir; - } - first = 0; - } - - if (ndfltok) - { - const char *q = this_path, *end = this_path + this_path_len; - - while (q < end && *q != ':') - q++; - if (q < end) - { - const char *q2 = q + 1, *ml_end = end; - char *new_multilib_os_dir; - - while (q2 < end && *q2 != ':') - q2++; - if (*q2 == ':') - ml_end = q2; - new_multilib_os_dir = XNEWVEC (char, ml_end - q); - memcpy (new_multilib_os_dir, q + 1, ml_end - q - 1); - new_multilib_os_dir[ml_end - q - 1] = '\0'; - multilib_os_dir = *new_multilib_os_dir ? new_multilib_os_dir : "."; - - if (q2 < end && *q2 == ':') - { - char *new_multiarch_dir = XNEWVEC (char, end - q2); - memcpy (new_multiarch_dir, q2 + 1, end - q2 - 1); - new_multiarch_dir[end - q2 - 1] = '\0'; - multiarch_dir = new_multiarch_dir; - } - break; - } - } - - ++p; - } - - if (multilib_dir == NULL && multilib_os_dir != NULL - && strcmp (multilib_os_dir, ".") == 0) - { - free (CONST_CAST (char *, multilib_os_dir)); - multilib_os_dir = NULL; - } - else if (multilib_dir != NULL && multilib_os_dir == NULL) - multilib_os_dir = multilib_dir; -} - -/* Print out the multiple library subdirectory selection - information. This prints out a series of lines. Each line looks - like SUBDIRECTORY;@OPTION@OPTION, with as many options as is - required. Only the desired options are printed out, the negative - matches. The options are print without a leading dash. There are - no spaces to make it easy to use the information in the shell. - Each subdirectory is printed only once. This assumes the ordering - generated by the genmultilib script. Also, we leave out ones that match - the exclusions. */ - -static void -print_multilib_info (void) -{ - const char *p = multilib_select; - const char *last_path = 0, *this_path; - int skip; - unsigned int last_path_len = 0; - - while (*p != '\0') - { - skip = 0; - /* Ignore newlines. */ - if (*p == '\n') - { - ++p; - continue; - } - - /* Get the initial path. */ - this_path = p; - while (*p != ' ') - { - if (*p == '\0') - { - invalid_select: - fatal_error ("multilib select %qs is invalid", multilib_select); - } - - ++p; - } - - /* When --disable-multilib was used but target defines - MULTILIB_OSDIRNAMES, entries starting with .: (and not starting - with .:: for multiarch configurations) are there just to find - multilib_os_dir, so skip them from output. */ - if (this_path[0] == '.' && this_path[1] == ':' && this_path[2] != ':') - skip = 1; - - /* Check for matches with the multilib_exclusions. We don't bother - with the '!' in either list. If any of the exclusion rules match - all of its options with the select rule, we skip it. */ - { - const char *e = multilib_exclusions; - const char *this_arg; - - while (*e != '\0') - { - int m = 1; - /* Ignore newlines. */ - if (*e == '\n') - { - ++e; - continue; - } - - /* Check the arguments. */ - while (*e != ';') - { - const char *q; - int mp = 0; - - if (*e == '\0') - { - invalid_exclusion: - fatal_error ("multilib exclusion %qs is invalid", - multilib_exclusions); - } - - if (! m) - { - ++e; - continue; - } - - this_arg = e; - - while (*e != ' ' && *e != ';') - { - if (*e == '\0') - goto invalid_exclusion; - ++e; - } - - q = p + 1; - while (*q != ';') - { - const char *arg; - int len = e - this_arg; - - if (*q == '\0') - goto invalid_select; - - arg = q; - - while (*q != ' ' && *q != ';') - { - if (*q == '\0') - goto invalid_select; - ++q; - } - - if (! strncmp (arg, this_arg, - (len < q - arg) ? q - arg : len) - || default_arg (this_arg, e - this_arg)) - { - mp = 1; - break; - } - - if (*q == ' ') - ++q; - } - - if (! mp) - m = 0; - - if (*e == ' ') - ++e; - } - - if (m) - { - skip = 1; - break; - } - - if (*e != '\0') - ++e; - } - } - - if (! skip) - { - /* If this is a duplicate, skip it. */ - skip = (last_path != 0 - && (unsigned int) (p - this_path) == last_path_len - && ! filename_ncmp (last_path, this_path, last_path_len)); - - last_path = this_path; - last_path_len = p - this_path; - } - - /* If this directory requires any default arguments, we can skip - it. We will already have printed a directory identical to - this one which does not require that default argument. */ - if (! skip) - { - const char *q; - - q = p + 1; - while (*q != ';') - { - const char *arg; - - if (*q == '\0') - goto invalid_select; - - if (*q == '!') - arg = NULL; - else - arg = q; - - while (*q != ' ' && *q != ';') - { - if (*q == '\0') - goto invalid_select; - ++q; - } - - if (arg != NULL - && default_arg (arg, q - arg)) - { - skip = 1; - break; - } - - if (*q == ' ') - ++q; - } - } - - if (! skip) - { - const char *p1; - - for (p1 = last_path; p1 < p && *p1 != ':'; p1++) - putchar (*p1); - putchar (';'); - } - - ++p; - while (*p != ';') - { - int use_arg; - - if (*p == '\0') - goto invalid_select; - - if (skip) - { - ++p; - continue; - } - - use_arg = *p != '!'; - - if (use_arg) - putchar ('@'); - - while (*p != ' ' && *p != ';') - { - if (*p == '\0') - goto invalid_select; - if (use_arg) - putchar (*p); - ++p; - } - - if (*p == ' ') - ++p; - } - - if (! skip) - { - /* If there are extra options, print them now. */ - if (multilib_extra && *multilib_extra) - { - int print_at = TRUE; - const char *q; - - for (q = multilib_extra; *q != '\0'; q++) - { - if (*q == ' ') - print_at = TRUE; - else - { - if (print_at) - putchar ('@'); - putchar (*q); - print_at = FALSE; - } - } - } - - putchar ('\n'); - } - - ++p; - } -} - -/* getenv built-in spec function. - - Returns the value of the environment variable given by its first - argument, concatenated with the second argument. If the - environment variable is not defined, a fatal error is issued. */ - -static const char * -getenv_spec_function (int argc, const char **argv) -{ - char *value; - char *result; - char *ptr; - size_t len; - - if (argc != 2) - return NULL; - - value = getenv (argv[0]); - if (!value) - fatal_error ("environment variable %qs not defined", argv[0]); - - /* We have to escape every character of the environment variable so - they are not interpreted as active spec characters. A - particularly painful case is when we are reading a variable - holding a windows path complete with \ separators. */ - len = strlen (value) * 2 + strlen (argv[1]) + 1; - result = XNEWVAR (char, len); - for (ptr = result; *value; ptr += 2) - { - ptr[0] = '\\'; - ptr[1] = *value++; - } - - strcpy (ptr, argv[1]); - - return result; -} - -/* if-exists built-in spec function. - - Checks to see if the file specified by the absolute pathname in - ARGS exists. Returns that pathname if found. - - The usual use for this function is to check for a library file - (whose name has been expanded with %s). */ - -static const char * -if_exists_spec_function (int argc, const char **argv) -{ - /* Must have only one argument. */ - if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) - return argv[0]; - - return NULL; -} - -/* if-exists-else built-in spec function. - - This is like if-exists, but takes an additional argument which - is returned if the first argument does not exist. */ - -static const char * -if_exists_else_spec_function (int argc, const char **argv) -{ - /* Must have exactly two arguments. */ - if (argc != 2) - return NULL; - - if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) - return argv[0]; - - return argv[1]; -} - -/* replace-outfile built-in spec function. - - This looks for the first argument in the outfiles array's name and - replaces it with the second argument. */ - -static const char * -replace_outfile_spec_function (int argc, const char **argv) -{ - int i; - /* Must have exactly two arguments. */ - if (argc != 2) - abort (); - - for (i = 0; i < n_infiles; i++) - { - if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) - outfiles[i] = xstrdup (argv[1]); - } - return NULL; -} - -/* remove-outfile built-in spec function. - * - * This looks for the first argument in the outfiles array's name and - * removes it. */ - -static const char * -remove_outfile_spec_function (int argc, const char **argv) -{ - int i; - /* Must have exactly one argument. */ - if (argc != 1) - abort (); - - for (i = 0; i < n_infiles; i++) - { - if (outfiles[i] && !filename_cmp (outfiles[i], argv[0])) - outfiles[i] = NULL; - } - return NULL; -} - -/* Given two version numbers, compares the two numbers. - A version number must match the regular expression - ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* -*/ -static int -compare_version_strings (const char *v1, const char *v2) -{ - int rresult; - regex_t r; - - if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", - REG_EXTENDED | REG_NOSUB) != 0) - abort (); - rresult = regexec (&r, v1, 0, NULL, 0); - if (rresult == REG_NOMATCH) - fatal_error ("invalid version number %qs", v1); - else if (rresult != 0) - abort (); - rresult = regexec (&r, v2, 0, NULL, 0); - if (rresult == REG_NOMATCH) - fatal_error ("invalid version number %qs", v2); - else if (rresult != 0) - abort (); - - return strverscmp (v1, v2); -} - - -/* version_compare built-in spec function. - - This takes an argument of the following form: - - <comparison-op> <arg1> [<arg2>] <switch> <result> - - and produces "result" if the comparison evaluates to true, - and nothing if it doesn't. - - The supported <comparison-op> values are: - - >= true if switch is a later (or same) version than arg1 - !> opposite of >= - < true if switch is an earlier version than arg1 - !< opposite of < - >< true if switch is arg1 or later, and earlier than arg2 - <> true if switch is earlier than arg1 or is arg2 or later - - If the switch is not present, the condition is false unless - the first character of the <comparison-op> is '!'. - - For example, - %:version-compare(>= 10.3 mmacosx-version-min= -lmx) - adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ - -static const char * -version_compare_spec_function (int argc, const char **argv) -{ - int comp1, comp2; - size_t switch_len; - const char *switch_value = NULL; - int nargs = 1, i; - bool result; - - if (argc < 3) - fatal_error ("too few arguments to %%:version-compare"); - if (argv[0][0] == '\0') - abort (); - if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') - nargs = 2; - if (argc != nargs + 3) - fatal_error ("too many arguments to %%:version-compare"); - - switch_len = strlen (argv[nargs + 1]); - for (i = 0; i < n_switches; i++) - if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) - && check_live_switch (i, switch_len)) - switch_value = switches[i].part1 + switch_len; - - if (switch_value == NULL) - comp1 = comp2 = -1; - else - { - comp1 = compare_version_strings (switch_value, argv[1]); - if (nargs == 2) - comp2 = compare_version_strings (switch_value, argv[2]); - else - comp2 = -1; /* This value unused. */ - } - - switch (argv[0][0] << 8 | argv[0][1]) - { - case '>' << 8 | '=': - result = comp1 >= 0; - break; - case '!' << 8 | '<': - result = comp1 >= 0 || switch_value == NULL; - break; - case '<' << 8: - result = comp1 < 0; - break; - case '!' << 8 | '>': - result = comp1 < 0 || switch_value == NULL; - break; - case '>' << 8 | '<': - result = comp1 >= 0 && comp2 < 0; - break; - case '<' << 8 | '>': - result = comp1 < 0 || comp2 >= 0; - break; - - default: - fatal_error ("unknown operator %qs in %%:version-compare", argv[0]); - } - if (! result) - return NULL; - - return argv[nargs + 2]; -} - -/* %:include builtin spec function. This differs from %include in that it - can be nested inside a spec, and thus be conditionalized. It takes - one argument, the filename, and looks for it in the startfile path. - The result is always NULL, i.e. an empty expansion. */ - -static const char * -include_spec_function (int argc, const char **argv) -{ - char *file; - - if (argc != 1) - abort (); - - file = find_a_file (&startfile_prefixes, argv[0], R_OK, true); - read_specs (file ? file : argv[0], false, false); - - return NULL; -} - -/* %:find-file spec function. This function replaces its argument by - the file found through find_file, that is the -print-file-name gcc - program option. */ -static const char * -find_file_spec_function (int argc, const char **argv) -{ - const char *file; - - if (argc != 1) - abort (); - - file = find_file (argv[0]); - return file; -} - - -/* %:find-plugindir spec function. This function replaces its argument - by the -iplugindir=<dir> option. `dir' is found through find_file, that - is the -print-file-name gcc program option. */ -static const char * -find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED) -{ - const char *option; - - if (argc != 0) - abort (); - - option = concat ("-iplugindir=", find_file ("plugin"), NULL); - return option; -} - - -/* %:print-asm-header spec function. Print a banner to say that the - following output is from the assembler. */ - -static const char * -print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED, - const char **argv ATTRIBUTE_UNUSED) -{ - printf (_("Assembler options\n=================\n\n")); - printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n")); - fflush (stdout); - return NULL; -} - -/* Get a random number for -frandom-seed */ - -static unsigned HOST_WIDE_INT -get_random_number (void) -{ - unsigned HOST_WIDE_INT ret = 0; - int fd; - - fd = open ("/dev/urandom", O_RDONLY); - if (fd >= 0) - { - read (fd, &ret, sizeof (HOST_WIDE_INT)); - close (fd); - if (ret) - return ret; - } - - /* Get some more or less random data. */ -#ifdef HAVE_GETTIMEOFDAY - { - struct timeval tv; - - gettimeofday (&tv, NULL); - ret = tv.tv_sec * 1000 + tv.tv_usec / 1000; - } -#else - { - time_t now = time (NULL); - - if (now != (time_t)-1) - ret = (unsigned) now; - } -#endif - - return ret ^ getpid(); -} - -/* %:compare-debug-dump-opt spec function. Save the last argument, - expected to be the last -fdump-final-insns option, or generate a - temporary. */ - -static const char * -compare_debug_dump_opt_spec_function (int arg, - const char **argv ATTRIBUTE_UNUSED) -{ - char *ret; - char *name; - int which; - static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3]; - - if (arg != 0) - fatal_error ("too many arguments to %%:compare-debug-dump-opt"); - - do_spec_2 ("%{fdump-final-insns=*:%*}"); - do_spec_1 (" ", 0, NULL); - - if (argbuf.length () > 0 - && strcmp (argv[argbuf.length () - 1], ".")) - { - if (!compare_debug) - return NULL; - - name = xstrdup (argv[argbuf.length () - 1]); - ret = NULL; - } - else - { - const char *ext = NULL; - - if (argbuf.length () > 0) - { - do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}"); - ext = ".gkd"; - } - else if (!compare_debug) - return NULL; - else - do_spec_2 ("%g.gkd"); - - do_spec_1 (" ", 0, NULL); - - gcc_assert (argbuf.length () > 0); - - name = concat (argbuf.last (), ext, NULL); - - ret = concat ("-fdump-final-insns=", name, NULL); - } - - which = compare_debug < 0; - debug_check_temp_file[which] = name; - - if (!which) - { - unsigned HOST_WIDE_INT value = get_random_number (); - - sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value); - } - - if (*random_seed) - { - char *tmp = ret; - ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ", - ret, NULL); - free (tmp); - } - - if (which) - *random_seed = 0; - - return ret; -} - -static const char *debug_auxbase_opt; - -/* %:compare-debug-self-opt spec function. Expands to the options - that are to be passed in the second compilation of - compare-debug. */ - -static const char * -compare_debug_self_opt_spec_function (int arg, - const char **argv ATTRIBUTE_UNUSED) -{ - if (arg != 0) - fatal_error ("too many arguments to %%:compare-debug-self-opt"); - - if (compare_debug >= 0) - return NULL; - - do_spec_2 ("%{c|S:%{o*:%*}}"); - do_spec_1 (" ", 0, NULL); - - if (argbuf.length () > 0) - debug_auxbase_opt = concat ("-auxbase-strip ", - argbuf.last (), - NULL); - else - debug_auxbase_opt = NULL; - - return concat ("\ -%<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \ -%<fdump-final-insns=* -w -S -o %j \ -%{!fcompare-debug-second:-fcompare-debug-second} \ -", compare_debug_opt, NULL); -} - -/* %:compare-debug-auxbase-opt spec function. Expands to the auxbase - options that are to be passed in the second compilation of - compare-debug. It expects, as an argument, the basename of the - current input file name, with the .gk suffix appended to it. */ - -static const char * -compare_debug_auxbase_opt_spec_function (int arg, - const char **argv) -{ - char *name; - int len; - - if (arg == 0) - fatal_error ("too few arguments to %%:compare-debug-auxbase-opt"); - - if (arg != 1) - fatal_error ("too many arguments to %%:compare-debug-auxbase-opt"); - - if (compare_debug >= 0) - return NULL; - - len = strlen (argv[0]); - if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0) - fatal_error ("argument to %%:compare-debug-auxbase-opt " - "does not end in .gk"); - - if (debug_auxbase_opt) - return debug_auxbase_opt; - -#define OPT "-auxbase " - - len -= 3; - name = (char*) xmalloc (sizeof (OPT) + len); - memcpy (name, OPT, sizeof (OPT) - 1); - memcpy (name + sizeof (OPT) - 1, argv[0], len); - name[sizeof (OPT) - 1 + len] = '\0'; - -#undef OPT - - return name; -} - -/* %:pass-through-libs spec function. Finds all -l options and input - file names in the lib spec passed to it, and makes a list of them - prepended with the plugin option to cause them to be passed through - to the final link after all the new object files have been added. */ - -const char * -pass_through_libs_spec_func (int argc, const char **argv) -{ - char *prepended = xstrdup (" "); - int n; - /* Shlemiel the painter's algorithm. Innately horrible, but at least - we know that there will never be more than a handful of strings to - concat, and it's only once per run, so it's not worth optimising. */ - for (n = 0; n < argc; n++) - { - char *old = prepended; - /* Anything that isn't an option is a full path to an output - file; pass it through if it ends in '.a'. Among options, - pass only -l. */ - if (argv[n][0] == '-' && argv[n][1] == 'l') - { - const char *lopt = argv[n] + 2; - /* Handle both joined and non-joined -l options. If for any - reason there's a trailing -l with no joined or following - arg just discard it. */ - if (!*lopt && ++n >= argc) - break; - else if (!*lopt) - lopt = argv[n]; - prepended = concat (prepended, "-plugin-opt=-pass-through=-l", - lopt, " ", NULL); - } - else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2)) - { - prepended = concat (prepended, "-plugin-opt=-pass-through=", - argv[n], " ", NULL); - } - if (prepended != old) - free (old); - } - return prepended; -} - -/* %:replace-extension spec function. Replaces the extension of the - first argument with the second argument. */ - -const char * -replace_extension_spec_func (int argc, const char **argv) -{ - char *name; - char *p; - char *result; - int i; - - if (argc != 2) - fatal_error ("too few arguments to %%:replace-extension"); - - name = xstrdup (argv[0]); - - for (i = strlen(name) - 1; i >= 0; i--) - if (IS_DIR_SEPARATOR (name[i])) - break; - - p = strrchr (name + i + 1, '.'); - if (p != NULL) - *p = '\0'; - - result = concat (name, argv[1], NULL); - - free (name); - return result; -} - -/* Insert backslash before spaces in ORIG (usually a file path), to - avoid being broken by spec parser. - - This function is needed as do_spec_1 treats white space (' ' and '\t') - as the end of an argument. But in case of -plugin /usr/gcc install/xxx.so, - the file name should be treated as a single argument rather than being - broken into multiple. Solution is to insert '\\' before the space in a - file name. - - This function converts and only converts all occurrence of ' ' - to '\\' + ' ' and '\t' to '\\' + '\t'. For example: - "a b" -> "a\\ b" - "a b" -> "a\\ \\ b" - "a\tb" -> "a\\\tb" - "a\\ b" -> "a\\\\ b" - - orig: input null-terminating string that was allocated by xalloc. The - memory it points to might be freed in this function. Behavior undefined - if ORIG wasn't xalloced or was freed already at entry. - - Return: ORIG if no conversion needed. Otherwise a newly allocated string - that was converted from ORIG. */ - -static char * -convert_white_space (char *orig) -{ - int len, number_of_space = 0; - - for (len = 0; orig[len]; len++) - if (orig[len] == ' ' || orig[len] == '\t') number_of_space++; - - if (number_of_space) - { - char *new_spec = (char *) xmalloc (len + number_of_space + 1); - int j, k; - for (j = 0, k = 0; j <= len; j++, k++) - { - if (orig[j] == ' ' || orig[j] == '\t') - new_spec[k++] = '\\'; - new_spec[k] = orig[j]; - } - free (orig); - return new_spec; - } - else - return orig; -} |